razor: razor.c@0aa93cfbcb3f

     1 #define _GNU_SOURCE

     3 #include <stdlib.h>

     4 #include <stddef.h>

     5 #include <stdio.h>

     6 #include <string.h>

     7 #include <sys/types.h>

     8 #include <sys/stat.h>

     9 #include <sys/mman.h>

    10 #include <unistd.h>

    11 #include <fcntl.h>

    12 #include <errno.h>

    13 #include <ctype.h>

    14 #include <fnmatch.h>

    16 #include "razor.h"

    17 #include "razor-internal.h"

    19 struct array {

    20 	void *data;

    21 	int size, alloc;

    22 };

    24 struct razor_set_section {

    25 	unsigned int type;

    26 	unsigned int offset;

    27 	unsigned int size;

    28 };

    30 struct razor_set_header {

    31 	unsigned int magic;

    32 	unsigned int version;

    33 	struct razor_set_section sections[0];

    34 };

    36 #define RAZOR_MAGIC 0x7a7a7a7a

    37 #define RAZOR_VERSION 1

    39 #define RAZOR_ENTRY_LAST	0x80000000ul

    40 #define RAZOR_IMMEDIATE		0x80000000ul

    41 #define RAZOR_ENTRY_MASK	0x00fffffful

    43 #define RAZOR_STRING_POOL	0

    44 #define RAZOR_PACKAGES		1

    45 #define RAZOR_PROPERTIES	2

    46 #define RAZOR_FILES		3

    47 #define RAZOR_PACKAGE_POOL	4

    48 #define RAZOR_PROPERTY_POOL	5

    49 #define RAZOR_FILE_POOL		6

    51 struct razor_package {

    52 	unsigned long name;

    53 	unsigned long version;

    54 	unsigned long properties;

    55 	unsigned long files;

    56 };

    58 struct razor_property {

    59 	unsigned long name;

    60 	unsigned long version;

    61 	unsigned long packages;

    62 };

    64 struct razor_entry {

    65 	unsigned long name;

    66 	unsigned long start;

    67 	unsigned long packages;

    68 };

    70 struct razor_set {

    71 	struct array string_pool;

    72  	struct array packages;

    73  	struct array properties;

    74  	struct array files;

    75 	struct array package_pool;

    76  	struct array property_pool;

    77  	struct array file_pool;

    78 	struct razor_set_header *header;

    79 };

    81 struct import_entry {

    82 	unsigned long package;

    83 	char *name;

    84 };

    86 struct import_directory {

    87 	unsigned long name, count;

    88 	struct array files;

    89 	struct array packages;

    90 	struct import_directory *last;

    91 };

    93 struct hashtable {

    94 	struct array buckets;

    95 	struct array *pool;

    96 };

    98 struct razor_importer {

    99 	struct razor_set *set;

   100 	struct hashtable table;

   101 	struct razor_package *package;

   102 	struct array properties;

   103 	struct array files;

   104 };

   106 static void

   107 array_init(struct array *array)

   108 {

   109 	memset(array, 0, sizeof *array);

   110 }

   112 static void

   113 array_release(struct array *array)

   114 {

   115 	free(array->data);

   116 }

   118 static void *

   119 array_add(struct array *array, int size)

   120 {

   121 	int alloc;

   122 	void *data, *p;

   124 	if (array->alloc > 0)

   125 		alloc = array->alloc;

   126 	else

   127 		alloc = 16;

   129 	while (alloc < array->size + size)

   130 		alloc *= 2;

   132 	if (array->alloc < alloc) {

   133 		data = realloc(array->data, alloc);

   134 		if (data == NULL)

   135 			return 0;

   136 		array->data = data;

   137 		array->alloc = alloc;

   138 	}

   140 	p = array->data + array->size;

   141 	array->size += size;

   143 	return p;

   144 }

   146 static void *

   147 zalloc(size_t size)

   148 {

   149 	void *p;

   151 	p = malloc(size);

   152 	memset(p, 0, size);

   154 	return p;

   155 }

   157 struct razor_set_section razor_sections[] = {

   158 	{ RAZOR_STRING_POOL,	offsetof(struct razor_set, string_pool) },

   159 	{ RAZOR_PACKAGES,	offsetof(struct razor_set, packages) },

   160 	{ RAZOR_PROPERTIES,	offsetof(struct razor_set, properties) },

   161 	{ RAZOR_FILES,		offsetof(struct razor_set, files) },

   162 	{ RAZOR_PACKAGE_POOL,	offsetof(struct razor_set, package_pool) },

   163 	{ RAZOR_PROPERTY_POOL,	offsetof(struct razor_set, property_pool) },

   164 	{ RAZOR_FILE_POOL,	offsetof(struct razor_set, file_pool) },

   165 };

   167 struct razor_set *

   168 razor_set_create(void)

   169 {

   170 	return zalloc(sizeof(struct razor_set));

   171 }

   173 struct razor_set *

   174 razor_set_open(const char *filename)

   175 {

   176 	struct razor_set *set;

   177 	struct razor_set_section *s;

   178 	struct stat stat;

   179 	struct array *array;

   180 	int fd;

   182 	set = zalloc(sizeof *set);

   183 	fd = open(filename, O_RDONLY);

   184 	if (fstat(fd, &stat) < 0)

   185 		return NULL;

   186 	set->header = mmap(NULL, stat.st_size, PROT_READ, MAP_PRIVATE, fd, 0);

   187 	if (set->header == MAP_FAILED) {

   188 		free(set);

   189 		return NULL;

   190 	}

   192 	for (s = set->header->sections; ~s->type; s++) {

   193 		if (s->type >= ARRAY_SIZE(razor_sections))

   194 			continue;

   195 		if (s->type != razor_sections[s->type].type)

   196 			continue;

   197 		array = (void *) set + razor_sections[s->type].offset;

   198 		array->data = (void *) set->header + s->offset;

   199 		array->size = s->size;

   200 		array->alloc = s->size;

   201 	}

   202 	close(fd);

   204 	return set;

   205 }

   207 void

   208 razor_set_destroy(struct razor_set *set)

   209 {

   210 	unsigned int size;

   211 	struct array *a;

   212 	int i;

   214 	if (set->header) {

   215 		for (i = 0; set->header->sections[i].type; i++)

   216 			;

   217 		size = set->header->sections[i].type;

   218 		munmap(set->header, size);

   219 	} else {

   220 		for (i = 0; i < ARRAY_SIZE(razor_sections); i++) {

   221 			a = (void *) set + razor_sections[i].offset;

   222 			free(a->data);

   223 		}

   224 	}

   226 	free(set);

   227 }

   229 int

   230 razor_set_write(struct razor_set *set, const char *filename)

   231 {

   232 	char data[4096];

   233 	struct razor_set_header *header = (struct razor_set_header *) data;

   234 	struct array *a;

   235 	unsigned long offset;

   236 	int i, fd;

   238 	memset(data, 0, sizeof data);

   239 	header->magic = RAZOR_MAGIC;

   240 	header->version = RAZOR_VERSION;

   241 	offset = sizeof data;

   243 	for (i = 0; i < ARRAY_SIZE(razor_sections); i++) {

   244 		if (razor_sections[i].type != i)

   245 			continue;

   246 		a = (void *) set + razor_sections[i].offset;

   247 		header->sections[i].type = i;

   248 		header->sections[i].offset = offset;

   249 		header->sections[i].size = a->size;

   250 		offset += ALIGN(a->size, 4096);

   251 	}

   253 	header->sections[i].type = ~0;

   254 	header->sections[i].offset = 0;

   255 	header->sections[i].size = 0;

   257 	fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0666);

   258 	if (fd < 0)

   259 		return -1;

   261 	razor_write(fd, data, sizeof data);

   262 	for (i = 0; i < ARRAY_SIZE(razor_sections); i++) {

   263 		if (razor_sections[i].type != i)

   264 			continue;

   265 		a = (void *) set + razor_sections[i].offset;

   266 		razor_write(fd, a->data, ALIGN(a->size, 4096));

   267 	}

   269 	close(fd);

   271 	return 0;

   272 }

   274 static unsigned int

   275 hash_string(const char *key)

   276 {

   277 	const char *p;

   278 	unsigned int hash = 0;

   280 	for (p = key; *p; p++)

   281 		hash = (hash * 617) ^ *p;

   283 	return hash;

   284 }

   286 static unsigned long

   287 hashtable_lookup(struct hashtable *table, const char *key)

   288 {

   289 	unsigned int mask, start, i;

   290 	unsigned long *b;

   291 	char *pool;

   293 	pool = table->pool->data;

   294 	mask = table->buckets.alloc - 1;

   295 	start = hash_string(key) * sizeof(unsigned long);

   297 	for (i = 0; i < table->buckets.alloc; i += sizeof *b) {

   298 		b = table->buckets.data + ((start + i) & mask);

   300 		if (*b == 0)

   301 			return 0;

   303 		if (strcmp(key, &pool[*b]) == 0)

   304 			return *b;

   305 	}

   307 	return 0;

   308 }

   310 static unsigned long

   311 add_to_string_pool(struct hashtable *table, const char *key)

   312 {

   313 	int len;

   314 	char *p;

   316 	len = strlen(key) + 1;

   317 	p = array_add(table->pool, len);

   318 	memcpy(p, key, len);

   320 	return p - (char *) table->pool->data;

   321 }

   323 static unsigned long

   324 add_to_property_pool(struct array *pool, struct array *properties)

   325 {

   326 	unsigned long *p;

   328 	if (properties->size == 0)

   329 		return ~0;

   330 	else if (properties->size == sizeof *p)

   331 		return *(unsigned long *) properties->data | RAZOR_IMMEDIATE;

   333 	p = array_add(pool, properties->size);

   334 	memcpy(p, properties->data, properties->size);

   335 	p[properties->size / sizeof *p - 1] |= RAZOR_IMMEDIATE;

   337 	return p - (unsigned long *) pool->data;

   338 }

   340 static void

   341 do_insert(struct hashtable *table, unsigned long value)

   342 {

   343 	unsigned int mask, start, i;

   344 	unsigned long *b;

   345 	const char *key;

   347 	key = (char *) table->pool->data + value;

   348 	mask = table->buckets.alloc - 1;

   349 	start = hash_string(key) * sizeof(unsigned long);

   351 	for (i = 0; i < table->buckets.alloc; i += sizeof *b) {

   352 		b = table->buckets.data + ((start + i) & mask);

   353 		if (*b == 0) {

   354 			*b = value;

   355 			break;

   356 		}

   357 	}

   358 }

   360 static unsigned long

   361 hashtable_insert(struct hashtable *table, const char *key)

   362 {

   363 	unsigned long value, *buckets, *b, *end;

   364 	int alloc;

   366 	alloc = table->buckets.alloc;

   367 	array_add(&table->buckets, 4 * sizeof *buckets);

   368 	if (alloc != table->buckets.alloc) {

   369 		end = table->buckets.data + alloc;

   370 		memset(end, 0, table->buckets.alloc - alloc);

   371 		for (b = table->buckets.data; b < end; b++) {

   372 			value = *b;

   373 			if (value != 0) {

   374 				*b = 0;

   375 				do_insert(table, value);

   376 			}

   377 		}

   378 	}

   380 	value = add_to_string_pool(table, key);

   381 	do_insert (table, value);

   383 	return value;

   384 }

   386 static void

   387 hashtable_init(struct hashtable *table, struct array *pool)

   388 {

   389 	array_init(&table->buckets);

   390 	table->pool = pool;

   391 }

   393 static void

   394 hashtable_release(struct hashtable *table)

   395 {

   396 	array_release(&table->buckets);

   397 }

   399 static unsigned long

   400 hashtable_tokenize(struct hashtable *table, const char *string)

   401 {

   402 	unsigned long token;

   404 	if (string == NULL)

   405 		string = "";

   407 	token = hashtable_lookup(table, string);

   408 	if (token != 0)

   409 		return token;

   411 	return hashtable_insert(table, string);

   412 }

   414 static unsigned long

   415 razor_importer_tokenize(struct razor_importer *importer, const char *string)

   416 {

   417 	return hashtable_tokenize(&importer->table, string);

   418 }

   420 void

   421 razor_importer_begin_package(struct razor_importer *importer,

   422 			     const char *name, const char *version)

   423 {

   424 	struct razor_package *p;

   426 	p = array_add(&importer->set->packages, sizeof *p);

   427 	p->name = razor_importer_tokenize(importer, name);

   428 	p->version = razor_importer_tokenize(importer, version);

   430 	importer->package = p;

   431 	array_init(&importer->properties);

   432 }

   434 void

   435 razor_importer_finish_package(struct razor_importer *importer)

   436 {

   437 	struct razor_package *p;

   439 	p = importer->package;

   440 	p->properties = add_to_property_pool(&importer->set->property_pool,

   441 					     &importer->properties);

   443 	array_release(&importer->properties);

   444 }

   446 void

   447 razor_importer_add_property(struct razor_importer *importer,

   448 			    const char *name, const char *version,

   449 			    enum razor_property_type type)

   450 {

   451 	struct razor_property *p;

   452 	unsigned long *r;

   454 	p = array_add(&importer->set->properties, sizeof *p);

   455 	p->name = razor_importer_tokenize(importer, name) | (type << 30);

   456 	p->version = razor_importer_tokenize(importer, version);

   457 	p->packages = importer->package -

   458 		(struct razor_package *) importer->set->packages.data;

   460 	r = array_add(&importer->properties, sizeof *r);

   461 	*r = p - (struct razor_property *) importer->set->properties.data;

   462 }

   464 void

   465 razor_importer_add_file(struct razor_importer *importer, const char *name)

   466 {

   467 	struct import_entry *e;

   469 	e = array_add(&importer->files, sizeof *e);

   471 	e->package = importer->package -

   472 		(struct razor_package *) importer->set->packages.data;

   473 	e->name = strdup(name);

   474 }

   476 struct razor_importer *

   477 razor_importer_new(void)

   478 {

   479 	struct razor_importer *importer;

   481 	importer = zalloc(sizeof *importer);

   482 	importer->set = razor_set_create();

   483 	hashtable_init(&importer->table, &importer->set->string_pool);

   485 	return importer;

   486 }

   488 /* Destroy an importer without creating the set. */

   489 void

   490 razor_importer_destroy(struct razor_importer *importer)

   491 {

   492 	/* FIXME: write this */

   493 }

   496 typedef int (*compare_with_data_func_t)(const void *p1,

   497 					const void *p,

   498 					void *data);

   500 struct qsort_context {

   501 	size_t size;

   502 	compare_with_data_func_t compare;

   503 	void *data;

   504 };

   506 static void

   507 qsort_swap(void *p1, void *p2, size_t size)

   508 {

   509 	char buffer[size];

   511 	memcpy(buffer, p1, size);

   512 	memcpy(p1, p2, size);

   513 	memcpy(p2, buffer, size);

   514 }

   516 static void

   517 __qsort_with_data(void *base, size_t nelem, unsigned long *map,

   518 		  struct qsort_context *ctx)

   519 {

   520 	void *p, *start, *end, *pivot;

   521 	unsigned long *mp, *mstart, *mend, tmp;

   522 	int left, right, result;

   523 	size_t size = ctx->size;

   525 	p = base;

   526 	start = base;

   527 	end = base + nelem * size;

   528 	mp = map;

   529 	mstart = map;

   530 	mend = map + nelem;

   531 	pivot = base + (random() % nelem) * size;

   533 	while (p < end) {

   534 		result = ctx->compare(p, pivot, ctx->data);

   535 		if (result < 0) {

   536 			qsort_swap(p, start, size);

   537 			tmp = *mp;

   538 			*mp = *mstart;

   539 			*mstart = tmp;

   540 			if (start == pivot)

   541 				pivot = p;

   542 			start += size;

   543 			mstart++;

   544 			p += size;

   545 			mp++;

   546 		} else if (result == 0) {

   547 			p += size;

   548 			mp++;

   549 		} else {

   550  			end -= size;

   551 			mend--;

   552 			qsort_swap(p, end, size);

   553 			tmp = *mp;

   554 			*mp = *mend;

   555 			*mend = tmp;

   556 			if (end == pivot)

   557 				pivot = p;

   558 		}

   559 	}

   561 	left = (start - base) / size;

   562 	right = (base + nelem * size - end) / size;

   563 	if (left > 1)

   564 		__qsort_with_data(base, left, map, ctx);

   565 	if (right > 1)

   566 		__qsort_with_data(end, right, mend, ctx);

   567 }

   569 unsigned long *

   570 qsort_with_data(void *base, size_t nelem, size_t size,

   571 		compare_with_data_func_t compare, void *data)

   572 {

   573 	struct qsort_context ctx;

   574 	unsigned long *map;

   575 	int i;

   577 	if (nelem == 0)

   578 		return NULL;

   580 	ctx.size = size;

   581 	ctx.compare = compare;

   582 	ctx.data = data;

   584 	map = malloc(nelem * sizeof (unsigned long));

   585 	for (i = 0; i < nelem; i++)

   586 		map[i] = i;

   588 	__qsort_with_data(base, nelem, map, &ctx);

   590 	return map;

   591 }

   593 static int

   594 versioncmp(const char *s1, const char *s2)

   595 {

   596 	const char *p1, *p2;

   597 	long n1, n2;

   598 	int res;

   600 	n1 = strtol(s1, (char **) &p1, 0);

   601 	n2 = strtol(s2, (char **) &p2, 0);

   603 	/* Epoch; if one but not the other has an epoch set, default

   604 	 * the epoch-less version to 0. */

   605 	res = (*p1 == ':') - (*p2 == ':');

   606 	if (res < 0) {

   607 		n1 = 0;

   608 		p1 = s1;

   609 		p2++;

   610 	} else if (res > 0) {

   611 		p1++;

   612 		n2 = 0;

   613 		p2 = s2;

   614 	}

   616 	if (n1 != n2)

   617 		return n1 - n2;

   618 	while (*p1 && *p2) {

   619 		if (*p1 != *p2)

   620 			return *p1 - *p2;

   621 		p1++;

   622 		p2++;

   623 		if (isdigit(*p1) && isdigit(*p2))

   624 			return versioncmp(p1, p2);

   625 	}

   627 	return *p1 - *p2;

   628 }

   631 static int

   632 compare_packages(const void *p1, const void *p2, void *data)

   633 {

   634 	const struct razor_package *pkg1 = p1, *pkg2 = p2;

   635 	struct razor_set *set = data;

   636 	char *pool = set->string_pool.data;

   638 	if (pkg1->name == pkg2->name)

   639 		return versioncmp(&pool[pkg1->version], &pool[pkg2->version]);

   640 	else

   641 		return strcmp(&pool[pkg1->name], &pool[pkg2->name]);

   642 }

   644 static int

   645 compare_properties(const void *p1, const void *p2, void *data)

   646 {

   647 	const struct razor_property *prop1 = p1, *prop2 = p2;

   648 	struct razor_set *set = data;

   649 	char *pool = set->string_pool.data;

   651 	if (prop1->name == prop2->name)

   652 		return versioncmp(&pool[prop1->version],

   653 				  &pool[prop2->version]);

   654 	else if ((prop1->name & RAZOR_ENTRY_MASK) == (prop2->name & RAZOR_ENTRY_MASK))

   655 		return (prop1->name >> 30) - (prop2->name >> 30);

   656 	else

   657 		return strcmp(&pool[prop1->name & RAZOR_ENTRY_MASK],

   658 			      &pool[prop2->name & RAZOR_ENTRY_MASK]);

   659 }

   661 static unsigned long *

   662 uniqueify_properties(struct razor_set *set)

   663 {

   664 	struct razor_property *rp, *up, *rp_end;

   665 	struct array *pkgs, *p;

   666 	unsigned long *map, *rmap, *r;

   667 	int i, count, unique;

   669 	count = set->properties.size / sizeof(struct razor_property);

   670 	map = qsort_with_data(set->properties.data,

   671 			      count,

   672 			      sizeof(struct razor_property),

   673 			      compare_properties,

   674 			      set);

   676 	rp_end = set->properties.data + set->properties.size;

   677 	rmap = malloc(count * sizeof *map);

   678 	pkgs = zalloc(count * sizeof *pkgs);

   679 	for (rp = set->properties.data, up = rp, i = 0; rp < rp_end; rp++, i++) {

   680 		if (rp->name != up->name || rp->version != up->version) {

   681 			up++;

   682 			up->name = rp->name;

   683 			up->version = rp->version;

   684 		}

   686 		unique = up - (struct razor_property *) set->properties.data;

   687 		rmap[map[i]] = unique;

   688 		r = array_add(&pkgs[unique], sizeof *r);

   689 		*r = rp->packages;

   690 	}

   691 	free(map);

   693 	up++;

   694 	set->properties.size = (void *) up - set->properties.data;

   695 	rp_end = up;

   696 	for (rp = set->properties.data, p = pkgs; rp < rp_end; rp++, p++) {

   697 		if (p->size / sizeof *r == 1) {

   698 			r = p->data;

   699 			rp->packages = *r | RAZOR_IMMEDIATE;

   700 		} else {

   701 			rp->packages =

   702 				add_to_property_pool(&set->package_pool, p);

   703 		}

   704 		array_release(p);

   705 	}

   707 	free(pkgs);

   709 	return rmap;

   710 }

   712 static void

   713 remap_links(struct array *links, unsigned long *map)

   714 {

   715 	unsigned long *p, *end;

   717 	end = links->data + links->size;

   718 	for (p = links->data; p < end; p++)

   719 		*p = map[*p & RAZOR_ENTRY_MASK] | (*p & ~RAZOR_ENTRY_MASK);

   720 }

   722 static int

   723 compare_filenames(const void *p1, const void *p2, void *data)

   724 {

   725 	const struct import_entry *e1 = p1;

   726 	const struct import_entry *e2 = p2;

   728 	return strcmp(e1->name, e2->name);

   729 }

   731 static void

   732 count_entries(struct import_directory *d)

   733 {

   734 	struct import_directory *p, *end;

   736 	p = d->files.data;

   737 	end = d->files.data + d->files.size;

   738 	d->count = 0;

   739 	while (p < end) {

   740 		count_entries(p);

   741 		d->count += p->count + 1;

   742 		p++;

   743 	}

   744 }

   746 static void

   747 serialize_files(struct razor_set *set,

   748 		struct import_directory *d, struct array *array)

   749 {

   750 	struct import_directory *p, *end;

   751 	struct razor_entry *e = NULL;

   752 	unsigned long s, *r;

   754 	p = d->files.data;

   755 	end = d->files.data + d->files.size;

   756 	s = array->size / sizeof *e + d->files.size / sizeof *p;

   757 	while (p < end) {

   758 		e = array_add(array, sizeof *e);

   759 		e->name = p->name;

   760 		e->start = p->count > 0 ? s : 0;

   761 		s += p->count;

   763 		if (p->packages.size == 0) {

   764 			e->packages = ~0;

   765 		} else if (p->packages.size / sizeof *r == 1) {

   766 			r = p->packages.data;

   767 			e->packages = *r | RAZOR_IMMEDIATE;

   768 		} else {

   769 			e->packages = add_to_property_pool(&set->package_pool,

   770 							   &p->packages);

   771 		}

   772 		array_release(&p->packages);

   773 		p++;

   774 	}

   775 	if (e != NULL)

   776 		e->name |= RAZOR_ENTRY_LAST;

   778 	p = d->files.data;

   779 	end = d->files.data + d->files.size;

   780 	while (p < end) {

   781 		serialize_files(set, p, array);

   782 		p++;

   783 	}

   784 }

   786 static void

   787 remap_property_package_links(struct array *properties, unsigned long *rmap)

   788 {

   789 	struct razor_property *p, *end;

   791 	end = properties->data + properties->size;

   792 	for (p = properties->data; p < end; p++)

   793 		if (p->packages & RAZOR_IMMEDIATE)

   794 			p->packages = rmap[p->packages & RAZOR_ENTRY_MASK] |

   795 				RAZOR_IMMEDIATE;

   796 }

   798 static void

   799 build_file_tree(struct razor_importer *importer)

   800 {

   801 	int count, i, length;

   802 	struct import_entry *filenames;

   803 	char *f, *end;

   804 	unsigned long name, *r;

   805 	char dirname[256];

   806 	struct import_directory *d, root;

   807 	struct razor_entry *e;

   809 	count = importer->files.size / sizeof (struct import_entry);

   810 	qsort_with_data(importer->files.data,

   811 			count,

   812 			sizeof (struct import_entry),

   813 			compare_filenames,

   814 			NULL);

   816 	root.name = razor_importer_tokenize(importer, "");

   817 	array_init(&root.files);

   818 	array_init(&root.packages);

   819 	root.last = NULL;

   821 	filenames = importer->files.data;

   822 	for (i = 0; i < count; i++) {

   823 		f = filenames[i].name;

   824 		if (*f != '/')

   825 			continue;

   826 		f++;

   828 		d = &root;

   829 		while (*f) {

   830 			end = strchr(f, '/');

   831 			if (end == NULL)

   832 				end = f + strlen(f);

   833 			length = end - f;

   834 			memcpy(dirname, f, length);

   835 			dirname[length] ='\0';

   836 			name = razor_importer_tokenize(importer, dirname);

   837 			if (d->last == NULL || d->last->name != name) {

   838 				d->last = array_add(&d->files, sizeof *d);

   839 				d->last->name = name;

   840 				d->last->last = NULL;

   841 				array_init(&d->last->files);

   842 				array_init(&d->last->packages);

   843 			}

   844 			d = d->last;

   845 			f = end + 1;

   846 			if (*end == '\0')

   847 				break;

   848 		}

   850 		r = array_add(&d->packages, sizeof *r);

   851 		*r = filenames[i].package;

   852 		free(filenames[i].name);

   853 	}

   855 	count_entries(&root);

   856 	array_init(&importer->set->files);

   858 	e = array_add(&importer->set->files, sizeof *e);

   859 	e->name = root.name | RAZOR_ENTRY_LAST;

   860 	e->start = 1;

   861 	e->packages = ~0;

   863 	serialize_files(importer->set, &root, &importer->set->files);

   865 	array_release(&importer->files);

   866 }

   868 static void

   869 build_package_file_lists(struct razor_set *set, unsigned long *rmap)

   870 {

   871 	struct razor_package *p, *packages;

   872 	struct array *pkgs;

   873 	struct razor_entry *e, *end;

   874 	unsigned long *r, *q;

   875 	int i, count;

   877 	count = set->packages.size / sizeof *p;

   878 	pkgs = zalloc(count * sizeof *pkgs);

   880 	end = set->files.data + set->files.size;

   881 	for (e = set->files.data; e < end; e++) {

   882 		if (e->packages == ~0) {

   883 			continue;

   884 		} else if (e->packages & RAZOR_IMMEDIATE) {

   885 			e->packages = rmap[e->packages & RAZOR_ENTRY_MASK] |

   886 				RAZOR_IMMEDIATE;

   887 			r = &e->packages;

   888 		} else {

   889 			r = (unsigned long *) set->package_pool.data + e->packages;

   890 		}

   892 		while (1) {

   893 			q = array_add(&pkgs[*r & RAZOR_ENTRY_MASK], sizeof *q);

   894 			*q = e - (struct razor_entry *) set->files.data;

   895 			if (*r++ & RAZOR_IMMEDIATE)

   896 				break;

   897 		}

   898 	}

   900 	packages = set->packages.data;

   901 	for (i = 0; i < count; i++) {

   902 		packages[i].files =

   903 			add_to_property_pool(&set->file_pool, &pkgs[i]);

   904 		array_release(&pkgs[i]);

   905 	}

   906 	free(pkgs);

   907 }

   909 struct razor_set *

   910 razor_importer_finish(struct razor_importer *importer)

   911 {

   912 	struct razor_set *set;

   913 	unsigned long *map, *rmap;

   914 	int i, count;

   916 	map = uniqueify_properties(importer->set);

   917 	remap_links(&importer->set->property_pool, map);

   918 	free(map);

   920 	count = importer->set->packages.size / sizeof(struct razor_package);

   921 	map = qsort_with_data(importer->set->packages.data,

   922 			      count,

   923 			      sizeof(struct razor_package),

   924 			      compare_packages,

   925 			      importer->set);

   927 	rmap = malloc(count * sizeof *rmap);

   928 	for (i = 0; i < count; i++)

   929 		rmap[map[i]] = i;

   930 	free(map);

   932 	build_file_tree(importer);

   933 	remap_links(&importer->set->package_pool, rmap);

   934 	build_package_file_lists(importer->set, rmap);

   935 	remap_property_package_links(&importer->set->properties, rmap);

   936 	free(rmap);

   938 	set = importer->set;

   939 	hashtable_release(&importer->table);

   940 	free(importer);

   942 	return set;

   943 }

   945 struct razor_package_iterator {

   946 	struct razor_set *set;

   947 	struct razor_package *package, *end;

   948 };

   950 struct razor_package_iterator *

   951 razor_package_iterator_create(struct razor_set *set)

   952 {

   953 	struct razor_package_iterator *pi;

   955 	pi = zalloc(sizeof *pi);

   956 	pi->set = set;

   957 	pi->package = set->packages.data;

   958 	pi->end = set->packages.data + set->packages.size;

   960 	return pi;

   961 }

   963 int

   964 razor_package_iterator_next(struct razor_package_iterator *pi,

   965 			    struct razor_package **package,

   966 			    const char **name, const char **version)

   967 {

   968 	char *pool;

   970 	pool = pi->set->string_pool.data;

   971 	*package = pi->package;

   972 	*name = &pool[pi->package->name];

   973 	*version = &pool[pi->package->version];

   975 	return pi->package++ < pi->end;

   976 }

   978 void

   979 razor_package_iterator_destroy(struct razor_package_iterator *pi)

   980 {

   981 	free(pi);

   982 }

   984 struct razor_set *bsearch_set;

   986 static int

   987 compare_package_name(const void *key, const void *data)

   988 {

   989 	const struct razor_package *p = data;

   990 	char *pool;

   992 	pool = bsearch_set->string_pool.data;

   994 	return strcmp(key, &pool[p->name]);

   995 }

   997 struct razor_package *

   998 razor_set_get_package(struct razor_set *set, const char *package)

   999 {

  1000 	bsearch_set = set;

  1001 	return bsearch(package, set->packages.data,

  1002 		       set->packages.size / sizeof(struct razor_package),

  1003 		       sizeof(struct razor_package), compare_package_name);

  1004 }

  1006 static int

  1007 compare_property_name(const void *key, const void *data)

  1008 {

  1009 	const struct razor_property *p = data;

  1010 	char *pool;

  1012 	pool = bsearch_set->string_pool.data;

  1014 	return strcmp(key, &pool[p->name & RAZOR_ENTRY_MASK]);

  1015 }

  1017 struct razor_property *

  1018 razor_set_get_property(struct razor_set *set, const char *property)

  1019 {

  1020 	struct razor_property *p, *start;

  1022 	bsearch_set = set;

  1023 	p = bsearch(property, set->properties.data,

  1024 		    set->properties.size / sizeof(struct razor_property),

  1025 		    sizeof(struct razor_property), compare_property_name);

  1027 	start = set->properties.data;

  1028 	while (p > start &&

  1029 	       ((p - 1)->name & RAZOR_ENTRY_MASK) ==

  1030 	       (p->name & RAZOR_ENTRY_MASK))

  1031 		p--;

  1033 	return p;

  1034 }

  1036 struct razor_property_iterator {

  1037 	struct razor_set *set;

  1038 	struct razor_property *property, *end;

  1039 	unsigned long *index;

  1040 	int last;

  1041 };

  1043 struct razor_property_iterator *

  1044 razor_property_iterator_create(struct razor_set *set,

  1045 			       struct razor_package *package)

  1046 {

  1047 	struct razor_property_iterator *pi;

  1049 	pi = zalloc(sizeof *pi);

  1050 	pi->set = set;

  1051 	pi->property = set->properties.data;

  1052 	pi->end = set->properties.data + set->properties.size;

  1053 	if (package) {

  1054 		pi->index = (unsigned long *)

  1055 			set->property_pool.data + package->properties;

  1056 		pi->last = 0;

  1057 	} else {

  1058 		pi->index = NULL;

  1059 		pi->last = 0;

  1060 	}

  1062 	return pi;

  1063 }

  1065 int

  1066 razor_property_iterator_next(struct razor_property_iterator *pi,

  1067 			     struct razor_property **property,

  1068 			     const char **name, const char **version,

  1069 			     enum razor_property_type *type)

  1070 {

  1071 	char *pool;

  1072 	int valid;

  1073 	struct razor_property *p, *properties;

  1075 	if (pi->index) {

  1076 		properties = pi->set->properties.data;

  1077 		p = &properties[*pi->index & RAZOR_ENTRY_MASK];

  1078 		valid = !pi->last;

  1079 		pi->last = (*pi->index++ & RAZOR_IMMEDIATE) != 0;

  1080 		if (!valid)

  1081 			return valid;

  1082 	} else {

  1083 		p = pi->property++;

  1084 		valid = p < pi->end;

  1085 	}

  1087 	pool = pi->set->string_pool.data;

  1088 	*property = p;

  1089 	*name = &pool[p->name & RAZOR_ENTRY_MASK];

  1090 	*version = &pool[p->version];

  1091 	*type = p->name >> 30;

  1093 	return valid;

  1094 }

  1096 void

  1097 razor_property_iterator_destroy(struct razor_property_iterator *pi)

  1098 {

  1099 	free(pi);

  1100 }

  1102 void

  1103 razor_set_list_property_packages(struct razor_set *set,

  1104 				 const char *name,

  1105 				 const char *version,

  1106 				 enum razor_property_type type)

  1107 {

  1108 	struct razor_property *property, *end;

  1109 	struct razor_package *p, *packages;

  1110 	unsigned long *r;

  1111 	char *pool;

  1113 	if (name == NULL)

  1114 		return;

  1116 	property = razor_set_get_property(set, name);

  1117 	packages = set->packages.data;

  1118 	pool = set->string_pool.data;

  1119 	end = set->properties.data + set->properties.size;

  1120 	while (property < end &&

  1121 	       strcmp(name, &pool[property->name & RAZOR_ENTRY_MASK]) == 0) {

  1122 		if (version &&

  1123 		    versioncmp(version, &pool[property->version]) != 0)

  1124 			goto next;

  1125 		if (type != (property->name >> 30))

  1126 			goto next;

  1128 		if (property->packages & RAZOR_IMMEDIATE)

  1129 			r = &property->packages;

  1130 		else

  1131 			r = (unsigned long *)

  1132 				set->package_pool.data + property->packages;

  1133 		while (1) {

  1134 			p = &packages[*r & RAZOR_ENTRY_MASK];

  1135 			printf("%s-%s\n",

  1136 			       &pool[p->name & RAZOR_ENTRY_MASK],

  1137 			       &pool[p->version]);

  1138 			if (*r++ & RAZOR_IMMEDIATE)

  1139 				break;

  1140 		}

  1141 	next:

  1142 		property++;

  1143 	}

  1144 }

  1146 static struct razor_entry *

  1147 find_entry(struct razor_set *set, struct razor_entry *dir, const char *pattern)

  1148 {

  1149 	struct razor_entry *e;

  1150 	const char *n, *pool = set->string_pool.data;

  1151 	int len;

  1153 	e = (struct razor_entry *) set->files.data + dir->start;

  1154 	do {

  1155 		n = pool + (e->name & RAZOR_ENTRY_MASK);

  1156 		if (strcmp(pattern + 1, n) == 0)

  1157 			return e;

  1158 		len = strlen(n);

  1159 		if (e->start != 0 && strncmp(pattern + 1, n, len) == 0 &&

  1160 		    pattern[len + 1] == '/') {

  1161 			return find_entry(set, e, pattern + len + 1);

  1162 		}

  1163 	} while (((e++)->name & RAZOR_ENTRY_LAST) == 0);

  1165 	return NULL;

  1166 }

  1168 static void

  1169 list_dir(struct razor_set *set, struct razor_entry *dir,

  1170 	 const char *prefix, const char *pattern)

  1171 {

  1172 	struct razor_entry *e;

  1173 	const char *n, *pool = set->string_pool.data;

  1175 	e = (struct razor_entry *) set->files.data + dir->start;

  1176 	do {

  1177 		n = pool + (e->name & RAZOR_ENTRY_MASK);

  1178 		if (pattern && pattern[0] && fnmatch(pattern, n, 0) != 0)

  1179 			continue;

  1180 		printf("%s/%s%s\n", prefix, n, e->start > 0 ? "/" : "");

  1181 	} while (((e++)->name & RAZOR_ENTRY_LAST) == 0);

  1182 }

  1184 void

  1185 razor_set_list_files(struct razor_set *set, const char *pattern)

  1186 {

  1187 	struct razor_entry *e;

  1188 	char buffer[512], *p, *base;

  1190 	if (pattern == NULL)

  1191 		pattern = "/";

  1193 	strcpy(buffer, pattern);

  1194 	e = find_entry(set, set->files.data, buffer);

  1195 	if (e && e->start > 0) {

  1196 		base = NULL;

  1197 	} else {

  1198 		p = strrchr(buffer, '/');

  1199 		if (p) {

  1200 			*p = '\0';

  1201 			base = p + 1;

  1202 		} else {

  1203 			base = NULL;

  1204 		}

  1205 	}

  1206 	e = find_entry(set, set->files.data, buffer);

  1207 	if (e->start != 0)

  1208 		list_dir(set, e, buffer, base);

  1209 }

  1211 void

  1212 razor_set_list_file_packages(struct razor_set *set, const char *filename)

  1213 {

  1214 	struct razor_entry *e;

  1215 	struct razor_package *packages, *p;

  1216 	const char *pool;

  1217 	unsigned long *r;

  1219 	e = find_entry(set, set->files.data, filename);

  1220 	if (e == NULL)

  1221 		return;

  1223 	if (e->packages & RAZOR_IMMEDIATE)

  1224 		r = &e->packages;

  1225 	else

  1226 		r = (unsigned long *) set->package_pool.data + e->packages;

  1228 	packages = set->packages.data;

  1229 	pool = set->string_pool.data;

  1230 	while (1) {

  1231 		p = &packages[*r & RAZOR_ENTRY_MASK];

  1232 		printf("%s-%s\n", &pool[p->name], &pool[p->version]);

  1233 		if (*r++ & RAZOR_IMMEDIATE)

  1234 			break;

  1235 	}

  1236 }

  1238 static unsigned long *

  1239 list_package_files(struct razor_set *set, unsigned long *r,

  1240 		   struct razor_entry *dir, unsigned long end,

  1241 		   char *prefix)

  1242 {

  1243 	struct razor_entry *e, *f, *entries;

  1244 	unsigned long next, file;

  1245 	char *pool;

  1246 	int len;

  1248 	entries = (struct razor_entry *) set->files.data;

  1249 	pool = set->string_pool.data;

  1251 	e = entries + dir->start;

  1252 	do {

  1253 		if (entries + (*r & RAZOR_ENTRY_MASK) == e) {

  1254 			printf("%s/%s\n", prefix,

  1255 			       pool + (e->name & RAZOR_ENTRY_MASK));

  1256 			if (*r & RAZOR_ENTRY_LAST)

  1257 				return NULL;

  1258 			r++;

  1259 			if ((*r & RAZOR_ENTRY_MASK) >= end)

  1260 				return r;

  1261 		}

  1262 	} while (!((e++)->name & RAZOR_ENTRY_LAST));

  1264 	e = entries + dir->start;

  1265 	do {

  1266 		if (e->start == 0)

  1267 			continue;

  1269 		if (e->name & RAZOR_ENTRY_LAST)

  1270 			next = end;

  1271 		else {

  1272 			f = e + 1;

  1273 			while (f->start == 0 && !(f->name & RAZOR_ENTRY_LAST))

  1274 				f++;

  1275 			if (f->start == 0)

  1276 				next = end;

  1277 			else

  1278 				next = f->start;

  1279 		}

  1281 		file = *r & RAZOR_ENTRY_MASK;

  1282 		if (e->start <= file && file < next) {

  1283 			len = strlen(prefix);

  1284 			prefix[len] = '/';

  1285 			strcpy(prefix + len + 1,

  1286 			       pool + (e->name & RAZOR_ENTRY_MASK));

  1287 			r = list_package_files(set, r, e, next, prefix);

  1288 			prefix[len] = '\0';

  1289 		}

  1290 	} while (!((e++)->name & RAZOR_ENTRY_LAST) && r != NULL);

  1292 	return r;

  1293 }

  1295 void

  1296 razor_set_list_package_files(struct razor_set *set, const char *name)

  1297 {

  1298 	struct razor_package *package;

  1299 	unsigned long *r, end;

  1300 	char buffer[512];

  1302 	package = razor_set_get_package(set, name);

  1304 	r = (unsigned long *) set->file_pool.data + package->files;

  1305 	end = set->files.size / sizeof (struct razor_entry);

  1306 	buffer[0] = '\0';

  1307 	list_package_files(set, r, set->files.data, end, buffer);

  1308 }

  1310 static void

  1311 razor_set_validate(struct razor_set *set, struct array *unsatisfied)

  1312 {

  1313 	struct razor_property *r, *p, *end;

  1314 	unsigned long *u;

  1315 	char *pool;

  1317 	end = set->properties.data + set->properties.size;

  1318 	pool = set->string_pool.data;

  1320 	for (r = set->properties.data, p = r; r < end; r++) {

  1321 		if (r->name >> 30 != RAZOR_PROPERTY_REQUIRES)

  1322 			continue;

  1324 		if ((r->name & RAZOR_ENTRY_MASK) != (p->name & RAZOR_ENTRY_MASK)) {

  1325 			p = r;

  1326 			while (p < end && p->name == r->name)

  1327 				p++;

  1328 		}

  1330 		/* If there is more than one version of a provides,

  1331 		 * seek to the end for the highest version. */

  1332 		/* FIXME: This doesn't work if we have a series of

  1333 		 * requires a = 1, provides a = 1, requires a = 2,

  1334 		 * provides a = 2, as the kernel and kernel-devel

  1335 		 * does.*/

  1336 		while (p + 1 < end && p->name == (p + 1)->name)

  1337 			p++;

  1339 		/* FIXME: We need to track property flags (<, <=, =

  1340 		 * etc) to properly determine if a requires is

  1341 		 * satisfied.  The current code doesn't track that the

  1342 		 * requires a = 1 isn't satisfied by a = 2 provides. */

  1344 		if (p == end ||

  1345 		    (p->name >> 30) != RAZOR_PROPERTY_PROVIDES ||

  1346 		    (r->name & RAZOR_ENTRY_MASK) != (p->name & RAZOR_ENTRY_MASK) ||

  1347 		    versioncmp(&pool[r->version], &pool[p->version]) > 0) {

  1348 			/* FIXME: We ignore file requires for now. */

  1349 			if (pool[r->name & RAZOR_ENTRY_MASK] == '/')

  1350 				continue;

  1351 			u = array_add(unsatisfied, sizeof *u);

  1352 			*u = r - (struct razor_property *) set->properties.data;

  1353 		}

  1354 	}

  1355 }

  1357 void

  1358 razor_set_list_unsatisfied(struct razor_set *set)

  1359 {

  1360 	struct array unsatisfied;

  1361 	struct razor_property *properties, *r;

  1362 	unsigned long *u, *end;

  1363 	char *pool;

  1365 	array_init(&unsatisfied);

  1366 	razor_set_validate(set, &unsatisfied);

  1368 	end = unsatisfied.data + unsatisfied.size;

  1369 	properties = set->properties.data;

  1370 	pool = set->string_pool.data;

  1372 	for (u = unsatisfied.data; u < end; u++) {

  1373 		r = properties + *u;

  1374 		if (pool[r->version] == '\0')

  1375 			printf("%ss not satisfied\n",

  1376 			       &pool[r->name & RAZOR_ENTRY_MASK]);

  1377 		else

  1378 			printf("%s-%s not satisfied\n",

  1379 			       &pool[r->name & RAZOR_ENTRY_MASK],

  1380 			       &pool[r->version]);

  1381 	}

  1383 	array_release(&unsatisfied);

  1384 }

  1386 #define UPSTREAM_SOURCE 0x80000000ul

  1387 #define INDEX_MASK 0x00fffffful

  1389 struct source {

  1390 	struct razor_set *set;

  1391 	unsigned long *property_map;

  1392 };

  1394 struct razor_merger {

  1395 	struct razor_set *set;

  1396 	struct hashtable table;

  1397 	struct source source1;

  1398 	struct source source2;

  1399 };

  1401 static struct razor_merger *

  1402 razor_merger_create(struct razor_set *set1, struct razor_set *set2)

  1403 {

  1404 	struct razor_merger *merger;

  1405 	int count;

  1406 	size_t size;

  1408 	merger = zalloc(sizeof *merger);

  1409 	merger->set = razor_set_create();

  1410 	hashtable_init(&merger->table, &merger->set->string_pool);

  1412 	count = set1->properties.size / sizeof (struct razor_property);

  1413 	size = count * sizeof merger->source1.property_map[0];

  1414 	merger->source1.property_map = zalloc(size);

  1415 	merger->source1.set = set1;

  1417 	count = set2->properties.size / sizeof (struct razor_property);

  1418 	size = count * sizeof merger->source2.property_map[0];

  1419 	merger->source2.property_map = zalloc(size);

  1420 	merger->source2.set = set2;

  1422 	return merger;

  1423 }

  1425 static void

  1426 add_package(struct razor_merger *merger,

  1427 	    struct razor_package *package, struct source *source,

  1428 	    unsigned long flags)

  1429 {

  1430 	char *pool;

  1431 	unsigned long *r;

  1432 	struct razor_package *p;

  1434 	pool = source->set->string_pool.data;

  1435 	p = array_add(&merger->set->packages, sizeof *p);

  1436 	p->name = hashtable_tokenize(&merger->table, &pool[package->name]);

  1437 	p->name |= flags;

  1438 	p->version = hashtable_tokenize(&merger->table,

  1439 					&pool[package->version]);

  1440 	p->properties = package->properties;

  1442 	if (package->properties & RAZOR_IMMEDIATE)

  1443 		r = &package->properties;

  1444 	else

  1445 		r = (unsigned long *)

  1446 			source->set->property_pool.data + package->properties;

  1447 	while (1) {

  1448 		source->property_map[*r & RAZOR_ENTRY_MASK] = 1;

  1449 		if (*r++ & RAZOR_IMMEDIATE)

  1450 			break;

  1451 	}

  1452 }

  1455 /* Build the new package list sorted by merging the two package lists.

  1456  * Build new string pool as we go. */

  1457 static void

  1458 merge_packages(struct razor_merger *merger, struct array *packages)

  1459 {

  1460 	struct razor_package *upstream_packages, *p, *s, *send;

  1461 	struct source *source1, *source2;

  1462 	char *spool, *upool;

  1463 	unsigned long *u, *uend;

  1464 	int cmp;

  1466 	source1 = &merger->source1;

  1467 	source2 = &merger->source2;

  1468 	upstream_packages = source2->set->packages.data;

  1470 	u = packages->data;

  1471 	uend = packages->data + packages->size;

  1472 	upool = source2->set->string_pool.data;

  1474 	s = source1->set->packages.data;

  1475 	send = source1->set->packages.data + source1->set->packages.size;

  1476 	spool = source1->set->string_pool.data;

  1478 	while (s < send) {

  1479 		p = upstream_packages + *u;

  1481 		if (u < uend)

  1482 			cmp = strcmp(&spool[s->name], &upool[p->name]);

  1483 		if (u >= uend || cmp < 0) {

  1484 			add_package(merger, s, source1, 0);

  1485 			s++;

  1486 		} else if (cmp == 0) {

  1487 			add_package(merger, p, source2, UPSTREAM_SOURCE);

  1488 			s++;

  1489 			u++;

  1490 		} else {

  1491 			add_package(merger, p, source2, UPSTREAM_SOURCE);

  1492 			u++;

  1493 		}

  1494 	}

  1495 }

  1497 static unsigned long

  1498 add_property(struct razor_merger *merger,

  1499 	     const char *name, const char *version, int type)

  1500 {

  1501 	struct razor_property *p;

  1503 	p = array_add(&merger->set->properties, sizeof *p);

  1504 	p->name = hashtable_tokenize(&merger->table, name) | (type << 30);

  1505 	p->version = hashtable_tokenize(&merger->table, version);

  1507 	return p - (struct razor_property *) merger->set->properties.data;

  1508 }

  1510 static void

  1511 merge_properties(struct razor_merger *merger)

  1512 {

  1513 	struct razor_property *p1, *p2;

  1514 	struct razor_set *set1, *set2;

  1515 	unsigned long *map1, *map2;

  1516 	int i, j, cmp, count1, count2;

  1517 	char *pool1, *pool2;

  1519 	set1 = merger->source1.set;

  1520 	set2 = merger->source2.set;

  1521 	map1 = merger->source1.property_map;

  1522 	map2 = merger->source2.property_map;

  1524 	i = 0;

  1525 	j = 0;

  1526 	pool1 = set1->string_pool.data;

  1527 	pool2 = set2->string_pool.data;

  1529 	count1 = set1->properties.size / sizeof *p1;

  1530 	count2 = set2->properties.size / sizeof *p2;

  1531 	while (i < count1 || j < count2) {

  1532 		if (i < count1 && map1[i] == 0) {

  1533 			i++;

  1534 			continue;

  1535 		}

  1536 		if (j < count2 && map2[j] == 0) {

  1537 			j++;

  1538 			continue;

  1539 		}

  1540 		p1 = (struct razor_property *) set1->properties.data + i;

  1541 		p2 = (struct razor_property *) set2->properties.data + j;

  1542 		if (i < count1 && j < count2)

  1543 			cmp = strcmp(&pool1[p1->name & RAZOR_ENTRY_MASK],

  1544 				     &pool2[p2->name & RAZOR_ENTRY_MASK]);

  1545 		else if (i < count1)

  1546 			cmp = -1;

  1547 		else

  1548 			cmp = 1;

  1549 		if (cmp == 0)

  1550 			cmp = versioncmp(&pool1[p1->version],

  1551 					 &pool2[p2->version]);

  1552 		if (cmp < 0) {

  1553 			map1[i++] = add_property(merger,

  1554 						 &pool1[p1->name & RAZOR_ENTRY_MASK],

  1555 						 &pool1[p1->version],

  1556 						 (p1->name >> 30));

  1557 		} else if (cmp > 0) {

  1558 			map2[j++] = add_property(merger,

  1559 						 &pool2[p2->name & RAZOR_ENTRY_MASK],

  1560 						 &pool2[p2->version],

  1561 						 (p2->name >> 30));

  1562 		} else  {

  1563 			map1[i++] = map2[j++] = add_property(merger,

  1564 							     &pool1[p1->name & RAZOR_ENTRY_MASK],

  1565 							     &pool1[p1->version],

  1566 							     (p1->name >> 30));

  1567 		}

  1568 	}

  1569 }

  1571 static unsigned long

  1572 emit_properties(struct array *source_pool, unsigned long index,

  1573 		unsigned long *map, struct array *pool)

  1574 {

  1575 	unsigned long r, *p, *q;

  1577 	r = pool->size / sizeof *q;

  1578 	p = (unsigned long *) source_pool->data + index;

  1579 	while (1) {

  1580 		q = array_add(pool, sizeof *q);

  1581 		*q = map[*p & RAZOR_ENTRY_MASK] | (*p & ~RAZOR_ENTRY_MASK);

  1582 		if (*p++ & RAZOR_ENTRY_LAST)

  1583 			break;

  1584 	}

  1586 	return r;

  1587 }

  1589 /* Rebuild property->packages maps.  We can't just remap these, as a

  1590  * property may have lost or gained a number of packages.  Allocate an

  1591  * array per property and loop through the packages and add them to

  1592  * the arrays for their properties. */

  1593 static void

  1594 rebuild_package_lists(struct razor_set *set)

  1595 {

  1596 	struct array *pkgs, *a;

  1597 	struct razor_package *pkg, *pkg_end;

  1598 	struct razor_property *prop, *prop_end;

  1599 	unsigned long *r, *q, *pool;

  1600 	int count;

  1602 	count = set->properties.size / sizeof (struct razor_property);

  1603 	pkgs = zalloc(count * sizeof *pkgs);

  1604 	pkg_end = set->packages.data + set->packages.size;

  1605 	pool = set->property_pool.data;

  1607 	for (pkg = set->packages.data; pkg < pkg_end; pkg++) {

  1608 		for (r = &pool[pkg->properties]; ; r++) {

  1609 			q = array_add(&pkgs[*r & RAZOR_ENTRY_MASK], sizeof *q);

  1610 			*q = pkg - (struct razor_package *) set->packages.data;

  1611 			if (*r & RAZOR_IMMEDIATE)

  1612 				break;

  1613 		}

  1614 	}

  1616 	prop_end = set->properties.data + set->properties.size;

  1617 	a = pkgs;

  1618 	for (prop = set->properties.data; prop < prop_end; prop++, a++) {

  1619 		if (a->size / sizeof *r == 1) {

  1620 			r = a->data;

  1621 			prop->packages = *r | RAZOR_IMMEDIATE;

  1622 		} else {

  1623 			prop->packages =

  1624 				add_to_property_pool(&set->property_pool, a);

  1625 		}

  1626 		array_release(a);

  1627 	}

  1628 	free(pkgs);

  1629 }

  1631 struct razor_set *

  1632 razor_merger_finish(struct razor_merger *merger)

  1633 {

  1634 	struct razor_set *result;

  1636 	result = merger->set;

  1637 	hashtable_release(&merger->table);

  1638 	free(merger);

  1640 	return result;

  1641 }

  1643 /* Add packages from 'upstream' to 'set'.  The packages to add are

  1644  * specified by the 'packages' array, which is a sorted list of

  1645  * package indexes.  Returns a newly allocated package set.  Does not

  1646  * enforce validity of the resulting package set.

  1647  *

  1648  * This looks more complicated than it is.  An easy way to merge two

  1649  * package sets would be to just use a razor_importer, but that

  1650  * requires resorting, and is thus O(n log n).  We can do this in a

  1651  * linear sweep, but it gets a little more complicated.

  1652  */

  1653 struct razor_set *

  1654 razor_set_add(struct razor_set *set, struct razor_set *upstream,

  1655 	      struct array *packages)

  1656 {

  1657 	struct razor_merger *merger;

  1658 	struct razor_package *p, *pend;

  1660 	merger = razor_merger_create(set, upstream);

  1662 	merge_packages(merger, packages);

  1664 	/* As we built the package list, we filled out a bitvector of

  1665 	 * the properties that are referenced by the packages in the

  1666 	 * new set.  Now we do a parallel loop through the properties

  1667 	 * and emit those marked in the bit vector to the new set.  In

  1668 	 * the process, we update the bit vector to actually map from

  1669 	 * indices in the old property list to indices in the new

  1670 	 * property list for both sets. */

  1672 	merge_properties(merger);

  1674 	/* Now we loop through the packages again and emit the

  1675 	 * property lists, remapped to point to the new properties. */

  1677 	pend = merger->set->packages.data + merger->set->packages.size;

  1678 	for (p = merger->set->packages.data; p < pend; p++) {

  1679 		struct source *src;

  1681 		if (p->name & UPSTREAM_SOURCE)

  1682 			src = &merger->source2;

  1683 		else

  1684 			src = &merger->source1;

  1686 		p->properties = emit_properties(&src->set->property_pool,

  1687 						p->properties,

  1688 						src->property_map,

  1689 						&merger->set->property_pool);

  1690 		p->name &= INDEX_MASK;

  1691 	}

  1693 	rebuild_package_lists(merger->set);

  1695 	return razor_merger_finish(merger);

  1696 }

  1698 void

  1699 razor_set_satisfy(struct razor_set *set, struct array *unsatisfied,

  1700 		  struct razor_set *upstream, struct array *list)

  1701 {

  1702 	struct razor_property *requires, *r;

  1703 	struct razor_property *p, *pend;

  1704 	unsigned long *u, *end, *pkg, *package_pool;

  1705 	char *pool, *upool;

  1707 	end = unsatisfied->data + unsatisfied->size;

  1708 	requires = set->properties.data;

  1709 	pool = set->string_pool.data;

  1711 	p = upstream->properties.data;

  1712 	pend = upstream->properties.data + upstream->properties.size;

  1713 	upool = upstream->string_pool.data;

  1714 	package_pool = upstream->package_pool.data;

  1716 	for (u = unsatisfied->data; u < end; u++) {

  1717 		r = requires + *u;

  1719 		while (p < pend &&

  1720 		       strcmp(&pool[r->name & RAZOR_ENTRY_MASK],

  1721 			      &upool[p->name & RAZOR_ENTRY_MASK]) > 0 &&

  1722 		       (p->name >> 30) != RAZOR_PROPERTY_PROVIDES)

  1723 			p++;

  1724 		/* If there is more than one version of a provides,

  1725 		 * seek to the end for the highest version. */

  1726 		while (p + 1 < pend && p->name == (p + 1)->name)

  1727 			p++;

  1729 		if (p == pend ||

  1730 		    strcmp(&pool[r->name & RAZOR_ENTRY_MASK],

  1731 			   &upool[p->name & RAZOR_ENTRY_MASK]) != 0 ||

  1732 		    versioncmp(&pool[r->version], &upool[p->version]) > 0) {

  1733 			/* Do we need to track unsatisfiable requires

  1734 			 * as we go, or should we just do a

  1735 			 * razor_set_validate() at the end? */

  1736 		} else {

  1737 			pkg = array_add(list, sizeof *pkg);

  1738 			/* We just pull in the first package that provides */

  1739 			if (p->packages & RAZOR_IMMEDIATE)

  1740 				*pkg = p->packages & RAZOR_ENTRY_MASK;

  1741 			else

  1742 				*pkg = package_pool[p->packages];

  1743 		}

  1744 	}

  1745 }

  1747 static void

  1748 find_packages(struct razor_set *set,

  1749 	      int count, const char **packages, struct array *list)

  1750 {

  1751 	struct razor_package *p;

  1752 	unsigned long *r;

  1753 	int i;

  1755 	/* FIXME: Sort the packages. */

  1756 	for (i = 0; i < count; i++) {

  1757 		p = razor_set_get_package(set, packages[i]);

  1758 		r = array_add(list, sizeof *r);

  1759 		*r = p - (struct razor_package *) set->packages.data;

  1760 	}

  1761 }

  1763 static void

  1764 find_all_packages(struct razor_set *set,

  1765 		  struct razor_set *upstream, struct array *list)

  1766 {

  1767 	struct razor_package *p, *u, *pend, *uend;

  1768 	unsigned long *r;

  1769 	char *pool, *upool;

  1771 	pend = set->packages.data + set->packages.size;

  1772 	pool = set->string_pool.data;

  1773 	u = upstream->packages.data;

  1774 	uend = upstream->packages.data + upstream->packages.size;

  1775 	upool = upstream->string_pool.data;

  1777 	for (p = set->packages.data; p < pend; p++) {

  1778 		while (u < uend && strcmp(&pool[p->name], &upool[u->name]) > 0)

  1779 			u++;

  1780 		if (strcmp(&pool[p->name], &upool[u->name]) == 0) {

  1781 			r = array_add(list, sizeof *r);

  1782 			*r = u - (struct razor_package *) upstream->packages.data;

  1783 		}

  1784 	}

  1785 }

  1787 struct razor_set *

  1788 razor_set_update(struct razor_set *set, struct razor_set *upstream,

  1789 		 int count, const char **packages)

  1790 {

  1791 	struct razor_set *new;

  1792 	struct razor_package *upackages;

  1793 	struct array list, unsatisfied;

  1794 	char *pool;

  1795 	unsigned long *u, *end;

  1796 	int total = 0;

  1798 	array_init(&list);

  1799 	if (count > 0)

  1800 		find_packages(upstream, count, packages, &list);

  1801 	else

  1802 		find_all_packages(set, upstream, &list);

  1804 	end = list.data + list.size;

  1805 	upackages = upstream->packages.data;

  1806 	pool = upstream->string_pool.data;

  1807 	total += list.size / sizeof *u;

  1809 	while (list.size > 0) {

  1810 		new = razor_set_add(set, upstream, &list);

  1811 		array_release(&list);

  1812 		razor_set_destroy(set);

  1813 		set = new;

  1815 		array_init(&unsatisfied);

  1816 		razor_set_validate(new, &unsatisfied);

  1817 		array_init(&list);

  1818 		razor_set_satisfy(new, &unsatisfied, upstream, &list);

  1819 		array_release(&unsatisfied);

  1821 		end = list.data + list.size;

  1822 		upackages = upstream->packages.data;

  1823 		pool = upstream->string_pool.data;

  1824 		total += list.size / sizeof *u;

  1825 	}

  1827 	array_release(&list);

  1829 	return set;

  1830 }

  1832 /* The diff order matters.  We should sort the packages so that a

  1833  * REMOVE of a package comes before the INSTALL, and so that all

  1834  * requires for a package have been installed before the package.

  1835  **/

  1837 void

  1838 razor_set_diff(struct razor_set *set, struct razor_set *upstream,

  1839 	       razor_package_callback_t callback, void *data)

  1840 {

  1841 	struct razor_package *p, *pend, *u, *uend;

  1842 	char *ppool, *upool;

  1843 	int res = 0;

  1845 	p = set->packages.data;

  1846 	pend = set->packages.data + set->packages.size;

  1847 	ppool = set->string_pool.data;

  1849 	u = upstream->packages.data;

  1850 	uend = upstream->packages.data + upstream->packages.size;

  1851 	upool = upstream->string_pool.data;

  1853 	while (p < pend || u < uend) {

  1854 		if (p < pend && u < uend) {

  1855 			res = strcmp(&ppool[p->name], &upool[u->name]);

  1856 			if (res == 0)

  1857 				res = versioncmp(&ppool[p->version],

  1858 						 &upool[u->version]);

  1859 		}

  1861 		if (u == uend || res < 0) {

  1862 			callback(&ppool[p->name], &ppool[p->version],

  1863 				 NULL, data);

  1864 			p++;

  1865 			continue;

  1866 		} else if (p == pend || res > 0) {

  1867 			callback(&upool[u->name], NULL, &upool[u->version],

  1868 				 data);

  1869 			u++;

  1870 			continue;

  1871 		} else {

  1872 			p++;

  1873 			u++;

  1874 		}

  1875 	}

  1876 }

author	Kristian H?gsberg <krh@redhat.com>
	Thu Jan 10 21:08:03 2008 -0500 (2008-01-10)
changeset 94	0aa93cfbcb3f
parent 92	74f19848a71b
child 95	c47cbb91394c
permissions	-rw-r--r--