razor: razor.c@feef7736a439

     1 #define _GNU_SOURCE

     3 #include <stdlib.h>

     4 #include <stddef.h>

     5 #include <stdint.h>

     6 #include <stdio.h>

     7 #include <string.h>

     8 #include <sys/types.h>

     9 #include <sys/stat.h>

    10 #include <sys/mman.h>

    11 #include <unistd.h>

    12 #include <fcntl.h>

    13 #include <errno.h>

    14 #include <ctype.h>

    15 #include <fnmatch.h>

    17 #include "razor.h"

    18 #include "razor-internal.h"

    19 #include "types.h"

    21 struct razor_set_section {

    22 	uint32_t type;

    23 	uint32_t offset;

    24 	uint32_t size;

    25 };

    27 struct razor_set_header {

    28 	uint32_t magic;

    29 	uint32_t version;

    30 	struct razor_set_section sections[0];

    31 };

    33 #define RAZOR_MAGIC 0x7a7a7a7a

    34 #define RAZOR_VERSION 1

    36 #define RAZOR_STRING_POOL	0

    37 #define RAZOR_PACKAGES		1

    38 #define RAZOR_PROPERTIES	2

    39 #define RAZOR_FILES		3

    40 #define RAZOR_PACKAGE_POOL	4

    41 #define RAZOR_PROPERTY_POOL	5

    42 #define RAZOR_FILE_POOL		6

    44 struct razor_package {

    45 	uint name  : 24;

    46 	uint flags : 8;

    47 	uint32_t version;

    48 	struct list_head properties;

    49 	struct list_head files;

    50 };

    52 struct razor_property {

    53 	uint name  : 24;

    54 	uint flags : 6;

    55 	uint type  : 2;

    56 	uint32_t relation;

    57 	uint32_t version;

    58 	struct list_head packages;

    59 };

    61 struct razor_entry {

    62 	uint name  : 24;

    63 	uint flags : 8;

    64 	uint32_t start;

    65 	struct list_head packages;

    66 };

    68 #define RAZOR_ENTRY_LAST	0x80

    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 	uint32_t package;

    83 	char *name;

    84 };

    86 struct import_directory {

    87 	uint32_t name, count;

    88 	struct array files;

    89 	struct array packages;

    90 	struct import_directory *last;

    91 };

    93 struct razor_importer {

    94 	struct razor_set *set;

    95 	struct hashtable table;

    96 	struct razor_package *package;

    97 	struct array properties;

    98 	struct array files;

    99 };

   101 static void *

   102 zalloc(size_t size)

   103 {

   104 	void *p;

   106 	p = malloc(size);

   107 	memset(p, 0, size);

   109 	return p;

   110 }

   112 struct razor_set_section razor_sections[] = {

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

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

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

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

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

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

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

   120 };

   122 struct razor_set *

   123 razor_set_create(void)

   124 {

   125 	return zalloc(sizeof(struct razor_set));

   126 }

   128 struct razor_set *

   129 razor_set_open(const char *filename)

   130 {

   131 	struct razor_set *set;

   132 	struct razor_set_section *s;

   133 	struct stat stat;

   134 	struct array *array;

   135 	int fd;

   137 	set = zalloc(sizeof *set);

   138 	fd = open(filename, O_RDONLY);

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

   140 		return NULL;

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

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

   143 		free(set);

   144 		return NULL;

   145 	}

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

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

   149 			continue;

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

   151 			continue;

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

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

   154 		array->size = s->size;

   155 		array->alloc = s->size;

   156 	}

   157 	close(fd);

   159 	return set;

   160 }

   162 void

   163 razor_set_destroy(struct razor_set *set)

   164 {

   165 	unsigned int size;

   166 	struct array *a;

   167 	int i;

   169 	if (set->header) {

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

   171 			;

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

   173 		munmap(set->header, size);

   174 	} else {

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

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

   177 			free(a->data);

   178 		}

   179 	}

   181 	free(set);

   182 }

   184 int

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

   186 {

   187 	char data[4096];

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

   189 	struct array *a;

   190 	uint32_t offset;

   191 	int i, fd;

   193 	memset(data, 0, sizeof data);

   194 	header->magic = RAZOR_MAGIC;

   195 	header->version = RAZOR_VERSION;

   196 	offset = sizeof data;

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

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

   200 			continue;

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

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

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

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

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

   206 	}

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

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

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

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

   213 	if (fd < 0)

   214 		return -1;

   216 	razor_write(fd, data, sizeof data);

   217 	memset(data, 0, sizeof data);

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

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

   220 			continue;

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

   222 		razor_write(fd, a->data, a->size);

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

   224 	}

   226 	close(fd);

   228 	return 0;

   229 }

   231 void

   232 razor_importer_begin_package(struct razor_importer *importer,

   233 			     const char *name, const char *version)

   234 {

   235 	struct razor_package *p;

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

   238 	p->name = hashtable_tokenize(&importer->table, name);

   239 	p->flags = 0;

   240 	p->version = hashtable_tokenize(&importer->table, version);

   242 	importer->package = p;

   243 	array_init(&importer->properties);

   244 }

   246 void

   247 razor_importer_finish_package(struct razor_importer *importer)

   248 {

   249 	list_set_array(&importer->package->properties,

   250 		       &importer->set->property_pool,

   251 		       &importer->properties,

   252 		       1);

   254 	array_release(&importer->properties);

   255 }

   257 void

   258 razor_importer_add_property(struct razor_importer *importer,

   259 			    const char *name,

   260 			    enum razor_version_relation relation,

   261 			    const char *version,

   262 			    enum razor_property_type type)

   263 {

   264 	struct razor_property *p;

   265 	uint32_t *r;

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

   268 	p->name = hashtable_tokenize(&importer->table, name);

   269 	p->flags = 0;

   270 	p->type = type;

   271 	p->relation = relation;

   272 	p->version = hashtable_tokenize(&importer->table, version);

   273 	list_set_ptr(&p->packages, importer->package -

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

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

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

   278 }

   280 void

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

   282 {

   283 	struct import_entry *e;

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

   287 	e->package = importer->package -

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

   289 	e->name = strdup(name);

   290 }

   292 struct razor_importer *

   293 razor_importer_new(void)

   294 {

   295 	struct razor_importer *importer;

   297 	importer = zalloc(sizeof *importer);

   298 	importer->set = razor_set_create();

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

   301 	return importer;

   302 }

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

   305 void

   306 razor_importer_destroy(struct razor_importer *importer)

   307 {

   308 	/* FIXME: write this */

   309 }

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

   313 					const void *p,

   314 					void *data);

   316 struct qsort_context {

   317 	size_t size;

   318 	compare_with_data_func_t compare;

   319 	void *data;

   320 };

   322 static void

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

   324 {

   325 	char buffer[size];

   327 	memcpy(buffer, p1, size);

   328 	memcpy(p1, p2, size);

   329 	memcpy(p2, buffer, size);

   330 }

   332 static void

   333 __qsort_with_data(void *base, size_t nelem, uint32_t *map,

   334 		  struct qsort_context *ctx)

   335 {

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

   337 	uint32_t *mp, *mstart, *mend, tmp;

   338 	int left, right, result;

   339 	size_t size = ctx->size;

   341 	p = base;

   342 	start = base;

   343 	end = base + nelem * size;

   344 	mp = map;

   345 	mstart = map;

   346 	mend = map + nelem;

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

   349 	while (p < end) {

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

   351 		if (result < 0) {

   352 			qsort_swap(p, start, size);

   353 			tmp = *mp;

   354 			*mp = *mstart;

   355 			*mstart = tmp;

   356 			if (start == pivot)

   357 				pivot = p;

   358 			start += size;

   359 			mstart++;

   360 			p += size;

   361 			mp++;

   362 		} else if (result == 0) {

   363 			p += size;

   364 			mp++;

   365 		} else {

   366  			end -= size;

   367 			mend--;

   368 			qsort_swap(p, end, size);

   369 			tmp = *mp;

   370 			*mp = *mend;

   371 			*mend = tmp;

   372 			if (end == pivot)

   373 				pivot = p;

   374 		}

   375 	}

   377 	left = (start - base) / size;

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

   379 	if (left > 1)

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

   381 	if (right > 1)

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

   383 }

   385 uint32_t *

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

   387 		compare_with_data_func_t compare, void *data)

   388 {

   389 	struct qsort_context ctx;

   390 	uint32_t *map;

   391 	int i;

   393 	if (nelem == 0)

   394 		return NULL;

   396 	ctx.size = size;

   397 	ctx.compare = compare;

   398 	ctx.data = data;

   400 	map = malloc(nelem * sizeof (uint32_t));

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

   402 		map[i] = i;

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

   406 	return map;

   407 }

   409 static int

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

   411 {

   412 	const char *p1, *p2;

   413 	long n1, n2;

   414 	int res;

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

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

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

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

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

   422 	if (res < 0) {

   423 		n1 = 0;

   424 		p1 = s1;

   425 		p2++;

   426 	} else if (res > 0) {

   427 		p1++;

   428 		n2 = 0;

   429 		p2 = s2;

   430 	}

   432 	if (n1 != n2)

   433 		return n1 - n2;

   434 	while (*p1 && *p2) {

   435 		if (*p1 != *p2)

   436 			return *p1 - *p2;

   437 		p1++;

   438 		p2++;

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

   440 			return versioncmp(p1, p2);

   441 	}

   443 	return *p1 - *p2;

   444 }

   446 static int

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

   448 {

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

   450 	struct razor_set *set = data;

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

   453 	/* FIXME: what if the flags are different? */

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

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

   456 	else

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

   458 }

   460 static int

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

   462 {

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

   464 	struct razor_set *set = data;

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

   467 	if (prop1->name != prop2->name)

   468 		return strcmp(&pool[prop1->name], &pool[prop2->name]);

   469 	else if (prop1->type != prop2->type)

   470 		return prop1->type - prop2->type;

   471 	else if (prop1->relation != prop2->relation)

   472 		return prop1->relation - prop2->relation;

   473 	else

   474 		return versioncmp(&pool[prop1->version], &pool[prop2->version]);

   475 }

   477 static uint32_t *

   478 uniqueify_properties(struct razor_set *set)

   479 {

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

   481 	struct array *pkgs, *p;

   482 	struct list_head *r;

   483 	uint32_t *map, *rmap;

   484 	int i, count, unique;

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

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

   488 			      count,

   489 			      sizeof(struct razor_property),

   490 			      compare_properties,

   491 			      set);

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

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

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

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

   497 		if (rp->name != up->name || rp->type != up->type ||

   498 		    rp->relation != up->relation || rp->version != up->version) {

   499 			up++;

   500 			up->name = rp->name;

   501 			up->flags = 0;

   502 			up->type = rp->type;

   503 			up->relation = rp->relation;

   504 			up->version = rp->version;

   505 		}

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

   508 		rmap[map[i]] = unique;

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

   510 		*r = rp->packages;

   511 	}

   512 	free(map);

   514 	if (up != rp)

   515 		up++;

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

   517 	rp_end = up;

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

   519 		list_set_array(&rp->packages, &set->package_pool, p, 0);

   520 		array_release(p);

   521 	}

   523 	free(pkgs);

   525 	return rmap;

   526 }

   528 static int

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

   530 {

   531 	const struct import_entry *e1 = p1;

   532 	const struct import_entry *e2 = p2;

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

   535 }

   537 static void

   538 count_entries(struct import_directory *d)

   539 {

   540 	struct import_directory *p, *end;

   542 	p = d->files.data;

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

   544 	d->count = 0;

   545 	while (p < end) {

   546 		count_entries(p);

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

   548 		p++;

   549 	}

   550 }

   552 static void

   553 serialize_files(struct razor_set *set,

   554 		struct import_directory *d, struct array *array)

   555 {

   556 	struct import_directory *p, *end;

   557 	struct razor_entry *e = NULL;

   558 	uint32_t s;

   560 	p = d->files.data;

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

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

   563 	while (p < end) {

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

   565 		e->name = p->name;

   566 		e->flags = 0;

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

   568 		s += p->count;

   570 		list_set_array(&e->packages, &set->package_pool, &p->packages, 0);

   571 		array_release(&p->packages);

   572 		p++;

   573 	}

   574 	if (e != NULL)

   575 		e->flags |= RAZOR_ENTRY_LAST;

   577 	p = d->files.data;

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

   579 	while (p < end) {

   580 		serialize_files(set, p, array);

   581 		p++;

   582 	}

   583 }

   585 static void

   586 remap_property_package_links(struct array *properties, uint32_t *rmap)

   587 {

   588 	struct razor_property *p, *end;

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

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

   592 		list_remap_head(&p->packages, rmap);

   593 }

   595 static void

   596 build_file_tree(struct razor_importer *importer)

   597 {

   598 	int count, i, length;

   599 	struct import_entry *filenames;

   600 	char *f, *end;

   601 	uint32_t name, *r;

   602 	char dirname[256];

   603 	struct import_directory *d, root;

   604 	struct razor_entry *e;

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

   607 	qsort_with_data(importer->files.data,

   608 			count,

   609 			sizeof (struct import_entry),

   610 			compare_filenames,

   611 			NULL);

   613 	root.name = hashtable_tokenize(&importer->table, "");

   614 	array_init(&root.files);

   615 	array_init(&root.packages);

   616 	root.last = NULL;

   618 	filenames = importer->files.data;

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

   620 		f = filenames[i].name;

   621 		if (*f != '/')

   622 			continue;

   623 		f++;

   625 		d = &root;

   626 		while (*f) {

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

   628 			if (end == NULL)

   629 				end = f + strlen(f);

   630 			length = end - f;

   631 			memcpy(dirname, f, length);

   632 			dirname[length] ='\0';

   633 			name = hashtable_tokenize(&importer->table, dirname);

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

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

   636 				d->last->name = name;

   637 				d->last->last = NULL;

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

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

   640 			}

   641 			d = d->last;

   642 			f = end + 1;

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

   644 				break;

   645 		}

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

   648 		*r = filenames[i].package;

   649 		free(filenames[i].name);

   650 	}

   652 	count_entries(&root);

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

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

   656 	e->name = root.name;

   657 	e->flags = RAZOR_ENTRY_LAST;

   658 	e->start = 1;

   659 	list_set_empty(&e->packages);

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

   663 	array_release(&importer->files);

   664 }

   666 static void

   667 build_package_file_lists(struct razor_set *set, uint32_t *rmap)

   668 {

   669 	struct razor_package *p, *packages;

   670 	struct array *pkgs;

   671 	struct razor_entry *e, *end;

   672 	struct list *r;

   673 	uint32_t *q;

   674 	int i, count;

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

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

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

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

   681 		list_remap_head(&e->packages, rmap);

   682 		r = list_first(&e->packages, &set->package_pool);

   683 		while (r) {

   684 			q = array_add(&pkgs[r->data], sizeof *q);

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

   686 			r = list_next(r);

   687 		}

   688 	}

   690 	packages = set->packages.data;

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

   692 		list_set_array(&packages[i].files, &set->file_pool, &pkgs[i], 0);

   693 		array_release(&pkgs[i]);

   694 	}

   695 	free(pkgs);

   696 }

   698 struct razor_set *

   699 razor_importer_finish(struct razor_importer *importer)

   700 {

   701 	struct razor_set *set;

   702 	uint32_t *map, *rmap;

   703 	int i, count;

   705 	map = uniqueify_properties(importer->set);

   706 	list_remap_pool(&importer->set->property_pool, map);

   707 	free(map);

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

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

   711 			      count,

   712 			      sizeof(struct razor_package),

   713 			      compare_packages,

   714 			      importer->set);

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

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

   718 		rmap[map[i]] = i;

   719 	free(map);

   721 	build_file_tree(importer);

   722 	list_remap_pool(&importer->set->package_pool, rmap);

   723 	build_package_file_lists(importer->set, rmap);

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

   725 	free(rmap);

   727 	set = importer->set;

   728 	hashtable_release(&importer->table);

   729 	free(importer);

   731 	return set;

   732 }

   734 struct razor_package_iterator {

   735 	struct razor_set *set;

   736 	struct razor_package *package, *end;

   737 	struct list *index;

   738 };

   740 struct razor_package_iterator *

   741 razor_package_iterator_create_with_index(struct razor_set *set,

   742 					 struct list *index)

   743 {

   744 	struct razor_package_iterator *pi;

   746 	pi = zalloc(sizeof *pi);

   747 	pi->set = set;

   748 	pi->index = index;

   750 	return pi;

   751 }

   753 struct razor_package_iterator *

   754 razor_package_iterator_create(struct razor_set *set)

   755 {

   756 	struct razor_package_iterator *pi;

   758 	pi = zalloc(sizeof *pi);

   759 	pi->set = set;

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

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

   763 	return pi;

   764 }

   766 struct razor_package_iterator *

   767 razor_package_iterator_create_for_property(struct razor_set *set,

   768 					   struct razor_property *property)

   769 {

   770 	struct list *index;

   772 	index = list_first(&property->packages, &set->package_pool);

   773 	return razor_package_iterator_create_with_index(set, index);

   774 }

   776 int

   777 razor_package_iterator_next(struct razor_package_iterator *pi,

   778 			    struct razor_package **package,

   779 			    const char **name, const char **version)

   780 {

   781 	char *pool;

   782 	int valid;

   783 	struct razor_package *p, *packages;

   785 	if (pi->package) {

   786 		p = pi->package++;

   787 		valid = p < pi->end;

   788 	} else if (pi->index) {

   789 		packages = pi->set->packages.data;

   790 		p = &packages[pi->index->data];

   791 		pi->index = list_next(pi->index);

   792 		valid = 1;

   793 	} else

   794 		valid = 0;

   796 	if (valid) {

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

   798 		*package = p;

   799 		*name = &pool[p->name];

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

   801 	} else {

   802 		*package = NULL;

   803 	}

   805 	return valid;

   806 }

   808 void

   809 razor_package_iterator_destroy(struct razor_package_iterator *pi)

   810 {

   811 	free(pi);

   812 }

   814 struct razor_package *

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

   816 {

   817 	struct razor_package_iterator *pi;

   818 	struct razor_package *p;

   819 	const char *name, *version;

   821 	pi = razor_package_iterator_create(set);

   822 	while (razor_package_iterator_next(pi, &p, &name, &version)) {

   823 		if (strcmp(package, name) == 0)

   824 			break;

   825 	}

   826 	razor_package_iterator_destroy(pi);

   828 	return p;

   829 }

   831 struct razor_property_iterator {

   832 	struct razor_set *set;

   833 	struct razor_property *property, *end;

   834 	struct list *index;

   835 };

   837 struct razor_property_iterator *

   838 razor_property_iterator_create(struct razor_set *set,

   839 			       struct razor_package *package)

   840 {

   841 	struct razor_property_iterator *pi;

   843 	pi = zalloc(sizeof *pi);

   844 	pi->set = set;

   846 	if (package) {

   847 		pi->index = list_first(&package->properties,

   848 				       &set->property_pool);

   849 	} else {

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

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

   852 	}

   854 	return pi;

   855 }

   857 int

   858 razor_property_iterator_next(struct razor_property_iterator *pi,

   859 			     struct razor_property **property,

   860 			     const char **name,

   861 			     enum razor_version_relation *relation,

   862 			     const char **version,

   863 			     enum razor_property_type *type)

   864 {

   865 	char *pool;

   866 	int valid;

   867 	struct razor_property *p, *properties;

   869 	if (pi->property) {

   870 		p = pi->property++;

   871 		valid = p < pi->end;

   872 	} else if (pi->index) {

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

   874 		p = &properties[pi->index->data];

   875 		pi->index = list_next(pi->index);

   876 		valid = 1;

   877 	} else

   878 		valid = 0;

   880 	if (valid) {

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

   882 		*property = p;

   883 		*name = &pool[p->name];

   884 		*relation = p->relation;

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

   886 		*type = p->type;

   887 	} else {

   888 		*property = NULL;

   889 	}

   891 	return valid;

   892 }

   894 void

   895 razor_property_iterator_destroy(struct razor_property_iterator *pi)

   896 {

   897 	free(pi);

   898 }

   900 static struct razor_entry *

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

   902 {

   903 	struct razor_entry *e;

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

   905 	int len;

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

   908 	do {

   909 		n = pool + e->name;

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

   911 			return e;

   912 		len = strlen(n);

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

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

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

   916 		}

   917 	} while (!((e++)->flags & RAZOR_ENTRY_LAST));

   919 	return NULL;

   920 }

   922 static void

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

   924 	 const char *prefix, const char *pattern)

   925 {

   926 	struct razor_entry *e;

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

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

   930 	do {

   931 		n = pool + e->name;

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

   933 			continue;

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

   935 	} while (!((e++)->flags & RAZOR_ENTRY_LAST));

   936 }

   938 void

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

   940 {

   941 	struct razor_entry *e;

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

   944 	if (pattern == NULL)

   945 		pattern = "/";

   947 	strcpy(buffer, pattern);

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

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

   950 		base = NULL;

   951 	} else {

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

   953 		if (p) {

   954 			*p = '\0';

   955 			base = p + 1;

   956 		} else {

   957 			base = NULL;

   958 		}

   959 	}

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

   961 	if (e->start != 0)

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

   963 }

   965 struct razor_package_iterator *

   966 razor_package_iterator_create_for_file(struct razor_set *set,

   967 				       const char *filename)

   968 {

   969 	struct razor_entry *entry;

   970 	struct list *index;

   972 	entry = find_entry(set, set->files.data, filename);

   973 	if (entry == NULL)

   974 		return NULL;

   976 	index = list_first(&entry->packages, &set->package_pool);

   977 	return razor_package_iterator_create_with_index(set, index);

   978 }

   980 static struct list *

   981 list_package_files(struct razor_set *set, struct list *r,

   982 		   struct razor_entry *dir, uint32_t end,

   983 		   char *prefix)

   984 {

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

   986 	uint32_t next, file;

   987 	char *pool;

   988 	int len;

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

   991 	pool = set->string_pool.data;

   993 	e = entries + dir->start;

   994 	do {

   995 		if (entries + r->data == e) {

   996 			printf("%s/%s\n", prefix, pool + e->name);

   997 			r = list_next(r);

   998 			if (!r)

   999 				return NULL;

  1000 			if (r->data >= end)

  1001 				return r;

  1002 		}

  1003 	} while (!((e++)->flags & RAZOR_ENTRY_LAST));

  1005 	e = entries + dir->start;

  1006 	do {

  1007 		if (e->start == 0)

  1008 			continue;

  1010 		if (e->flags & RAZOR_ENTRY_LAST)

  1011 			next = end;

  1012 		else {

  1013 			f = e + 1;

  1014 			while (f->start == 0 && !(f->flags & RAZOR_ENTRY_LAST))

  1015 				f++;

  1016 			if (f->start == 0)

  1017 				next = end;

  1018 			else

  1019 				next = f->start;

  1020 		}

  1022 		file = r->data;

  1023 		if (e->start <= file && file < next) {

  1024 			len = strlen(prefix);

  1025 			prefix[len] = '/';

  1026 			strcpy(prefix + len + 1, pool + e->name);

  1027 			r = list_package_files(set, r, e, next, prefix);

  1028 			prefix[len] = '\0';

  1029 		}

  1030 	} while (!((e++)->flags & RAZOR_ENTRY_LAST) && r != NULL);

  1032 	return r;

  1033 }

  1035 void

  1036 razor_set_list_package_files(struct razor_set *set, const char *name)

  1037 {

  1038 	struct razor_package *package;

  1039 	struct list *r;

  1040 	uint32_t end;

  1041 	char buffer[512];

  1043 	package = razor_set_get_package(set, name);

  1045 	r = list_first(&package->files, &set->file_pool);

  1046 	end = set->files.size / sizeof (struct razor_entry);

  1047 	buffer[0] = '\0';

  1048 	list_package_files(set, r, set->files.data, end, buffer);

  1049 }

  1051 static void

  1052 razor_set_validate(struct razor_set *set, struct array *unsatisfied)

  1053 {

  1054 	struct razor_property *r, *p, *end;

  1055 	uint32_t *u;

  1056 	char *pool;

  1058 	end = set->properties.data + set->properties.size;

  1059 	pool = set->string_pool.data;

  1061 	for (r = set->properties.data, p = r; r < end; r++) {

  1062 		if (r->type != RAZOR_PROPERTY_REQUIRES)

  1063 			continue;

  1065 		if (r->name != p->name) {

  1066 			p = r;

  1067 			while (p < end && p->name == r->name &&

  1068 			       p->type == r->type)

  1069 				p++;

  1070 		}

  1072 		/* If there is more than one version of a provides,

  1073 		 * seek to the end for the highest version. */

  1074 		/* FIXME: This doesn't work if we have a series of

  1075 		 * requires a = 1, provides a = 1, requires a = 2,

  1076 		 * provides a = 2, as the kernel and kernel-devel

  1077 		 * does.*/

  1078 		while (p + 1 < end && p->name == (p + 1)->name &&

  1079 		       p->type == (p + 1)->type)

  1080 			p++;

  1082 		/* FIXME: We need to track property flags (<, <=, =

  1083 		 * etc) to properly determine if a requires is

  1084 		 * satisfied.  The current code doesn't track that the

  1085 		 * requires a = 1 isn't satisfied by a = 2 provides. */

  1087 		if (p == end ||

  1088 		    p->type != RAZOR_PROPERTY_PROVIDES ||

  1089 		    r->name != p->name ||

  1090 		    versioncmp(&pool[r->version], &pool[p->version]) > 0) {

  1091 			/* FIXME: We ignore file requires for now. */

  1092 			if (pool[r->name] == '/')

  1093 				continue;

  1094 			u = array_add(unsatisfied, sizeof *u);

  1095 			*u = r - (struct razor_property *) set->properties.data;

  1096 		}

  1097 	}

  1098 }

  1100 void

  1101 razor_set_list_unsatisfied(struct razor_set *set)

  1102 {

  1103 	struct array unsatisfied;

  1104 	struct razor_property *properties, *r;

  1105 	uint32_t *u, *end;

  1106 	char *pool;

  1108 	array_init(&unsatisfied);

  1109 	razor_set_validate(set, &unsatisfied);

  1111 	end = unsatisfied.data + unsatisfied.size;

  1112 	properties = set->properties.data;

  1113 	pool = set->string_pool.data;

  1115 	for (u = unsatisfied.data; u < end; u++) {

  1116 		r = properties + *u;

  1117 		if (pool[r->version] == '\0')

  1118 			printf("%ss not satisfied\n",

  1119 			       &pool[r->name]);

  1120 		else

  1121 			printf("%s-%s not satisfied\n",

  1122 			       &pool[r->name],

  1123 			       &pool[r->version]);

  1124 	}

  1126 	array_release(&unsatisfied);

  1127 }

  1129 #define UPSTREAM_SOURCE 0x80

  1131 struct source {

  1132 	struct razor_set *set;

  1133 	uint32_t *property_map;

  1134 };

  1136 struct razor_merger {

  1137 	struct razor_set *set;

  1138 	struct hashtable table;

  1139 	struct source source1;

  1140 	struct source source2;

  1141 };

  1143 static struct razor_merger *

  1144 razor_merger_create(struct razor_set *set1, struct razor_set *set2)

  1145 {

  1146 	struct razor_merger *merger;

  1147 	int count;

  1148 	size_t size;

  1150 	merger = zalloc(sizeof *merger);

  1151 	merger->set = razor_set_create();

  1152 	hashtable_init(&merger->table, &merger->set->string_pool);

  1154 	count = set1->properties.size / sizeof (struct razor_property);

  1155 	size = count * sizeof merger->source1.property_map[0];

  1156 	merger->source1.property_map = zalloc(size);

  1157 	merger->source1.set = set1;

  1159 	count = set2->properties.size / sizeof (struct razor_property);

  1160 	size = count * sizeof merger->source2.property_map[0];

  1161 	merger->source2.property_map = zalloc(size);

  1162 	merger->source2.set = set2;

  1164 	return merger;

  1165 }

  1167 static void

  1168 add_package(struct razor_merger *merger,

  1169 	    struct razor_package *package, struct source *source,

  1170 	    uint32_t flags)

  1171 {

  1172 	char *pool;

  1173 	struct list *r;

  1174 	struct razor_package *p;

  1176 	pool = source->set->string_pool.data;

  1177 	p = array_add(&merger->set->packages, sizeof *p);

  1178 	p->name = hashtable_tokenize(&merger->table, &pool[package->name]);

  1179 	p->flags = flags;

  1180 	p->version = hashtable_tokenize(&merger->table,

  1181 					&pool[package->version]);

  1182 	p->properties = package->properties;

  1184 	r = list_first(&package->properties, &source->set->property_pool);

  1185 	while (r) {

  1186 		source->property_map[r->data] = 1;

  1187 		r = list_next(r);

  1188 	}

  1189 }

  1192 /* Build the new package list sorted by merging the two package lists.

  1193  * Build new string pool as we go. */

  1194 static void

  1195 merge_packages(struct razor_merger *merger, struct array *packages)

  1196 {

  1197 	struct razor_package *upstream_packages, *p, *s, *send;

  1198 	struct source *source1, *source2;

  1199 	char *spool, *upool;

  1200 	uint32_t *u, *uend;

  1201 	int cmp;

  1203 	source1 = &merger->source1;

  1204 	source2 = &merger->source2;

  1205 	upstream_packages = source2->set->packages.data;

  1207 	u = packages->data;

  1208 	uend = packages->data + packages->size;

  1209 	upool = source2->set->string_pool.data;

  1211 	s = source1->set->packages.data;

  1212 	send = source1->set->packages.data + source1->set->packages.size;

  1213 	spool = source1->set->string_pool.data;

  1215 	while (s < send || u < uend) {

  1216 		p = upstream_packages + *u;

  1218 		if (s < send && u < uend)

  1219 			cmp = strcmp(&spool[s->name], &upool[p->name]);

  1220 		else if (s < send)

  1221 			cmp = -1;

  1222 		else

  1223 			cmp = 1;

  1224 		if (cmp < 0) {

  1225 			add_package(merger, s, source1, 0);

  1226 			s++;

  1227 		} else if (cmp == 0) {

  1228 			add_package(merger, p, source2, UPSTREAM_SOURCE);

  1229 			s++;

  1230 			u++;

  1231 		} else {

  1232 			add_package(merger, p, source2, UPSTREAM_SOURCE);

  1233 			u++;

  1234 		}

  1235 	}

  1236 }

  1238 static uint32_t

  1239 add_property(struct razor_merger *merger,

  1240 	     const char *name, enum razor_version_relation relation,

  1241 	     const char *version, int type)

  1242 {

  1243 	struct razor_property *p;

  1245 	p = array_add(&merger->set->properties, sizeof *p);

  1246 	p->name = hashtable_tokenize(&merger->table, name);

  1247 	p->flags = 0;

  1248 	p->type = type;

  1249 	p->relation = relation;

  1250 	p->version = hashtable_tokenize(&merger->table, version);

  1252 	return p - (struct razor_property *) merger->set->properties.data;

  1253 }

  1255 static void

  1256 merge_properties(struct razor_merger *merger)

  1257 {

  1258 	struct razor_property *p1, *p2;

  1259 	struct razor_set *set1, *set2;

  1260 	uint32_t *map1, *map2;

  1261 	int i, j, cmp, count1, count2;

  1262 	char *pool1, *pool2;

  1264 	set1 = merger->source1.set;

  1265 	set2 = merger->source2.set;

  1266 	map1 = merger->source1.property_map;

  1267 	map2 = merger->source2.property_map;

  1269 	i = 0;

  1270 	j = 0;

  1271 	pool1 = set1->string_pool.data;

  1272 	pool2 = set2->string_pool.data;

  1274 	count1 = set1->properties.size / sizeof *p1;

  1275 	count2 = set2->properties.size / sizeof *p2;

  1276 	while (i < count1 || j < count2) {

  1277 		if (i < count1 && map1[i] == 0) {

  1278 			i++;

  1279 			continue;

  1280 		}

  1281 		if (j < count2 && map2[j] == 0) {

  1282 			j++;

  1283 			continue;

  1284 		}

  1285 		p1 = (struct razor_property *) set1->properties.data + i;

  1286 		p2 = (struct razor_property *) set2->properties.data + j;

  1287 		if (i < count1 && j < count2)

  1288 			cmp = strcmp(&pool1[p1->name], &pool2[p2->name]);

  1289 		else if (i < count1)

  1290 			cmp = -1;

  1291 		else

  1292 			cmp = 1;

  1293 		if (cmp == 0)

  1294 			cmp = p1->type - p2->type;

  1295 		if (cmp == 0)

  1296 			cmp = p1->relation - p2->relation;

  1297 		if (cmp == 0)

  1298 			cmp = versioncmp(&pool1[p1->version],

  1299 					 &pool2[p2->version]);

  1300 		if (cmp < 0) {

  1301 			map1[i++] = add_property(merger,

  1302 						 &pool1[p1->name],

  1303 						 p1->relation,

  1304 						 &pool1[p1->version],

  1305 						 p1->type);

  1306 		} else if (cmp > 0) {

  1307 			map2[j++] = add_property(merger,

  1308 						 &pool2[p2->name],

  1309 						 p2->relation,

  1310 						 &pool2[p2->version],

  1311 						 p2->type);

  1312 		} else  {

  1313 			map1[i++] = map2[j++] = add_property(merger,

  1314 							     &pool1[p1->name],

  1315 							     p1->relation,

  1316 							     &pool1[p1->version],

  1317 							     p1->type);

  1318 		}

  1319 	}

  1320 }

  1322 static void

  1323 emit_properties(struct list_head *properties, struct array *source_pool,

  1324 		uint32_t *map, struct array *pool)

  1325 {

  1326 	uint32_t r;

  1327 	struct list *p, *q;

  1329 	r = pool->size / sizeof *q;

  1330 	p = list_first(properties, source_pool);

  1331 	while (p) {

  1332 		q = array_add(pool, sizeof *q);

  1333 		q->data = map[p->data];

  1334 		q->flags = p->flags;

  1335 		p = list_next(p);

  1336 	}

  1338 	list_set_ptr(properties, r);

  1339 }

  1341 /* Rebuild property->packages maps.  We can't just remap these, as a

  1342  * property may have lost or gained a number of packages.  Allocate an

  1343  * array per property and loop through the packages and add them to

  1344  * the arrays for their properties. */

  1345 static void

  1346 rebuild_package_lists(struct razor_set *set)

  1347 {

  1348 	struct array *pkgs, *a;

  1349 	struct razor_package *pkg, *pkg_end;

  1350 	struct razor_property *prop, *prop_end;

  1351 	struct array *pool;

  1352 	struct list *r;

  1353 	uint32_t *q;

  1354 	int count;

  1356 	count = set->properties.size / sizeof (struct razor_property);

  1357 	pkgs = zalloc(count * sizeof *pkgs);

  1358 	pkg_end = set->packages.data + set->packages.size;

  1359 	pool = &set->property_pool;

  1361 	for (pkg = set->packages.data; pkg < pkg_end; pkg++) {

  1362 		r = list_first(&pkg->properties, pool);

  1363 		while (r) {

  1364 			q = array_add(&pkgs[r->data], sizeof *q);

  1365 			*q = pkg - (struct razor_package *) set->packages.data;

  1366 			r = list_next(r);

  1367 		}

  1368 	}

  1370 	prop_end = set->properties.data + set->properties.size;

  1371 	a = pkgs;

  1372 	for (prop = set->properties.data; prop < prop_end; prop++, a++) {

  1373 		list_set_array(&prop->packages, pool, a, 0);

  1374 		array_release(a);

  1375 	}

  1376 	free(pkgs);

  1377 }

  1379 struct razor_set *

  1380 razor_merger_finish(struct razor_merger *merger)

  1381 {

  1382 	struct razor_set *result;

  1384 	result = merger->set;

  1385 	hashtable_release(&merger->table);

  1386 	free(merger);

  1388 	return result;

  1389 }

  1391 /* Add packages from 'upstream' to 'set'.  The packages to add are

  1392  * specified by the 'packages' array, which is a sorted list of

  1393  * package indexes.  Returns a newly allocated package set.  Does not

  1394  * enforce validity of the resulting package set.

  1395  *

  1396  * This looks more complicated than it is.  An easy way to merge two

  1397  * package sets would be to just use a razor_importer, but that

  1398  * requires resorting, and is thus O(n log n).  We can do this in a

  1399  * linear sweep, but it gets a little more complicated.

  1400  */

  1401 struct razor_set *

  1402 razor_set_add(struct razor_set *set, struct razor_set *upstream,

  1403 	      struct array *packages)

  1404 {

  1405 	struct razor_merger *merger;

  1406 	struct razor_package *p, *pend;

  1408 	merger = razor_merger_create(set, upstream);

  1410 	merge_packages(merger, packages);

  1412 	/* As we built the package list, we filled out a bitvector of

  1413 	 * the properties that are referenced by the packages in the

  1414 	 * new set.  Now we do a parallel loop through the properties

  1415 	 * and emit those marked in the bit vector to the new set.  In

  1416 	 * the process, we update the bit vector to actually map from

  1417 	 * indices in the old property list to indices in the new

  1418 	 * property list for both sets. */

  1420 	merge_properties(merger);

  1422 	/* Now we loop through the packages again and emit the

  1423 	 * property lists, remapped to point to the new properties. */

  1425 	pend = merger->set->packages.data + merger->set->packages.size;

  1426 	for (p = merger->set->packages.data; p < pend; p++) {

  1427 		struct source *src;

  1429 		if (p->flags & UPSTREAM_SOURCE)

  1430 			src = &merger->source2;

  1431 		else

  1432 			src = &merger->source1;

  1434 		emit_properties(&p->properties,

  1435 				&src->set->property_pool,

  1436 				src->property_map,

  1437 				&merger->set->property_pool);

  1438 		p->flags &= ~UPSTREAM_SOURCE;

  1439 	}

  1441 	rebuild_package_lists(merger->set);

  1443 	return razor_merger_finish(merger);

  1444 }

  1446 void

  1447 razor_set_satisfy(struct razor_set *set, struct array *unsatisfied,

  1448 		  struct razor_set *upstream, struct array *list)

  1449 {

  1450 	struct razor_property *requires, *r;

  1451 	struct razor_property *p, *pend;

  1452 	uint32_t *u, *end, *pkg;

  1453 	struct array *package_pool;

  1454 	char *pool, *upool;

  1456 	end = unsatisfied->data + unsatisfied->size;

  1457 	requires = set->properties.data;

  1458 	pool = set->string_pool.data;

  1460 	p = upstream->properties.data;

  1461 	pend = upstream->properties.data + upstream->properties.size;

  1462 	upool = upstream->string_pool.data;

  1463 	package_pool = &upstream->package_pool;

  1465 	for (u = unsatisfied->data; u < end; u++) {

  1466 		r = requires + *u;

  1468 		while (p < pend &&

  1469 		       p->type != RAZOR_PROPERTY_PROVIDES &&

  1470 		       strcmp(&pool[r->name], &upool[p->name]) > 0)

  1471 			p++;

  1472 		/* If there is more than one version of a provides,

  1473 		 * seek to the end for the highest version. */

  1474 		while (p + 1 < pend && p->name == (p + 1)->name && p->type == (p + 1)->type)

  1475 			p++;

  1477 		if (p == pend ||

  1478 		    strcmp(&pool[r->name], &upool[p->name]) != 0 ||

  1479 		    versioncmp(&pool[r->version], &upool[p->version]) > 0) {

  1480 			/* Do we need to track unsatisfiable requires

  1481 			 * as we go, or should we just do a

  1482 			 * razor_set_validate() at the end? */

  1483 		} else {

  1484 			pkg = array_add(list, sizeof *pkg);

  1485 			/* We just pull in the first package that provides */

  1486 			*pkg = list_first(&p->packages, package_pool)->data;

  1487 		}

  1488 	}

  1489 }

  1491 static void

  1492 find_packages(struct razor_set *set,

  1493 	      int count, const char **package_names, struct array *list)

  1494 {

  1495 	struct razor_package_iterator *pi;

  1496 	struct razor_package *p, *packages;

  1497 	const char *name, *version;

  1498 	uint32_t *r;

  1499 	int i;

  1501 	packages = (struct razor_package *) set->packages.data;

  1502 	pi = razor_package_iterator_create(set);

  1504 	while (razor_package_iterator_next(pi, &p, &name, &version)) {

  1505 		for (i = 0; i < count; i++) {

  1506 			if (strcmp(name, package_names[i]) == 0) {

  1507 				r = array_add(list, sizeof *r);

  1508 				*r = p - packages;

  1509 				break;

  1510 			}

  1511 		}

  1512 	}

  1514 	razor_package_iterator_destroy(pi);

  1515 }

  1517 static void

  1518 find_all_packages(struct razor_set *set,

  1519 		  struct razor_set *upstream, struct array *list)

  1520 {

  1521 	struct razor_package *p, *u, *pend, *uend;

  1522 	uint32_t *r;

  1523 	char *pool, *upool;

  1525 	pend = set->packages.data + set->packages.size;

  1526 	pool = set->string_pool.data;

  1527 	u = upstream->packages.data;

  1528 	uend = upstream->packages.data + upstream->packages.size;

  1529 	upool = upstream->string_pool.data;

  1531 	for (p = set->packages.data; p < pend; p++) {

  1532 		while (u < uend && strcmp(&pool[p->name], &upool[u->name]) > 0)

  1533 			u++;

  1534 		if (strcmp(&pool[p->name], &upool[u->name]) == 0) {

  1535 			r = array_add(list, sizeof *r);

  1536 			*r = u - (struct razor_package *) upstream->packages.data;

  1537 		}

  1538 	}

  1539 }

  1541 struct razor_set *

  1542 razor_set_update(struct razor_set *set, struct razor_set *upstream,

  1543 		 int count, const char **packages)

  1544 {

  1545 	struct razor_set *new;

  1546 	struct array list, unsatisfied;

  1548 	array_init(&list);

  1549 	if (count > 0)

  1550 		find_packages(upstream, count, packages, &list);

  1551 	else

  1552 		find_all_packages(set, upstream, &list);

  1554 	while (list.size > 0) {

  1555 		new = razor_set_add(set, upstream, &list);

  1556 		array_release(&list);

  1557 		razor_set_destroy(set);

  1558 		set = new;

  1560 		array_init(&unsatisfied);

  1561 		razor_set_validate(new, &unsatisfied);

  1562 		array_init(&list);

  1563 		razor_set_satisfy(new, &unsatisfied, upstream, &list);

  1564 		array_release(&unsatisfied);

  1565 	}

  1567 	array_release(&list);

  1569 	return set;

  1570 }

  1572 /* The diff order matters.  We should sort the packages so that a

  1573  * REMOVE of a package comes before the INSTALL, and so that all

  1574  * requires for a package have been installed before the package.

  1575  **/

  1577 void

  1578 razor_set_diff(struct razor_set *set, struct razor_set *upstream,

  1579 	       razor_package_callback_t callback, void *data)

  1580 {

  1581 	struct razor_package_iterator *pi1, *pi2;

  1582 	struct razor_package *p1, *p2;

  1583 	const char *name1, *name2, *version1, *version2;

  1584 	int res;

  1586 	pi1 = razor_package_iterator_create(set);

  1587 	pi2 = razor_package_iterator_create(upstream);

  1589 	razor_package_iterator_next(pi1, &p1, &name1, &version1);

  1590 	razor_package_iterator_next(pi2, &p2, &name2, &version2);

  1592 	while (p1 || p2) {

  1593 		if (p1 && p2) {

  1594 			res = strcmp(name1, name2);

  1595 			if (res == 0)

  1596 				res = versioncmp(version1, version2);

  1597 		} else {

  1598 			res = 0;

  1599 		}

  1601 		if (p2 == NULL || res < 0)

  1602 			callback(name1, version1, NULL, data);

  1603 		else if (p1 == NULL || res > 0)

  1604 			callback(name2, NULL, version2, data);

  1606 		if (p1 != NULL && res <= 0)

  1607 			razor_package_iterator_next(pi1, &p1,

  1608 						    &name1, &version1);

  1609 		if (p2 != NULL && res >= 0)

  1610 			razor_package_iterator_next(pi2, &p2,

  1611 						    &name2, &version2);

  1612 	}

  1614 	razor_package_iterator_destroy(pi1);

  1615 	razor_package_iterator_destroy(pi2);

  1616 }

author	Dan Winship <danw@gnome.org>
	Fri Feb 15 15:08:38 2008 -0500 (2008-02-15)
changeset 124	feef7736a439
parent 123	4e699bd39b40
child 126	3142795705a5
permissions	-rw-r--r--