bookloupe/bookloupe.c
changeset 103 d22d8cd4f628
parent 102 ff0aa9b1397a
child 104 70cc629ec1e0
     1.1 --- a/bookloupe/bookloupe.c	Fri Oct 25 11:15:18 2013 +0100
     1.2 +++ b/bookloupe/bookloupe.c	Sun Oct 27 17:01:47 2013 +0000
     1.3 @@ -32,6 +32,9 @@
     1.4  #include "pending.h"
     1.5  #include "HTMLentities.h"
     1.6  
     1.7 +gchar *charset;		/* Or NULL for auto (ISO_8859-1/ASCII or UNICODE) */
     1.8 +GIConv charset_validator=(GIConv)-1;
     1.9 +
    1.10  gchar *prevline;
    1.11  
    1.12  /* Common typos. */
    1.13 @@ -127,6 +130,7 @@
    1.14  }; 
    1.15  
    1.16  gboolean pswit[SWITNO];  /* program switches */
    1.17 +gchar *opt_charset;
    1.18  
    1.19  gboolean typo_compat,paranoid_compat;
    1.20  
    1.21 @@ -198,6 +202,8 @@
    1.22      { "no-verbose", 0, G_OPTION_FLAG_HIDDEN|G_OPTION_FLAG_REVERSE,
    1.23        G_OPTION_ARG_NONE, pswit+VERBOSE_SWITCH,
    1.24        "Switch off verbose mode", NULL },
    1.25 +    { "charset", 0, 0, G_OPTION_ARG_STRING, &opt_charset,
    1.26 +      "Set of characters valid for this ebook", "NAME" },
    1.27      { NULL }
    1.28  };
    1.29  
    1.30 @@ -262,11 +268,55 @@
    1.31  UINT saved_cp;
    1.32  #endif
    1.33  
    1.34 +gboolean set_charset(const char *name,GError **err)
    1.35 +{
    1.36 +    /* The various UNICODE encodings all share the same character set. */
    1.37 +    const char *unicode_aliases[]={ "UCS-2", "UCS-2BE", "UCS-2LE", "UCS-4",
    1.38 +      "UCS-4BE", "UCS-4LE", "UCS2", "UCS4", "UNICODE", "UNICODEBIG",
    1.39 +      "UNICODELITTLE", "UTF-7", "UTF-8", "UTF-16", "UTF-16BE", "UTF-16LE",
    1.40 +      "UTF-32", "UTF-32BE", "UTF-32LE", "UTF7", "UTF8", "UTF16", "UTF16BE",
    1.41 +      "UTF16LE", "UTF32", "UTF32BE", "UTF32LE" };
    1.42 +    int i;
    1.43 +    if (charset)
    1.44 +	g_free(charset);
    1.45 +    if (charset_validator!=(GIConv)-1)
    1.46 +	g_iconv_close(charset_validator);
    1.47 +    if (!name || !g_strcasecmp(name,"auto"))
    1.48 +    {
    1.49 +	charset=NULL;
    1.50 +	charset_validator=(GIConv)-1;
    1.51 +	return TRUE;
    1.52 +    }
    1.53 +    else
    1.54 +	charset=g_strdup(name);
    1.55 +    for(i=0;i<G_N_ELEMENTS(unicode_aliases);i++)
    1.56 +	if (!g_strcasecmp(charset,unicode_aliases[i]))
    1.57 +	{
    1.58 +	    g_free(charset);
    1.59 +	    charset=g_strdup("UTF-8");
    1.60 +	    break;
    1.61 +	}
    1.62 +    if (!strcmp(charset,"UTF-8"))
    1.63 +	charset_validator=(GIConv)-1;
    1.64 +    else
    1.65 +    {
    1.66 +	charset_validator=g_iconv_open(charset,"UTF-8");
    1.67 +	if (charset_validator==(GIConv)-1)
    1.68 +	{
    1.69 +	    g_set_error(err,G_CONVERT_ERROR,G_CONVERT_ERROR_NO_CONVERSION,
    1.70 +	      "Unknown character set \"%s\"",charset);
    1.71 +	    return FALSE;
    1.72 +	}
    1.73 +    }
    1.74 +    return TRUE;
    1.75 +}
    1.76 +
    1.77  GKeyFile *config;
    1.78  
    1.79  void config_file_update(GKeyFile *kf)
    1.80  {
    1.81      int i;
    1.82 +    const char *s;
    1.83      gboolean sw;
    1.84      for(i=0;options[i].long_name;i++)
    1.85      {
    1.86 @@ -279,6 +329,13 @@
    1.87  		sw=!sw;
    1.88  	    g_key_file_set_boolean(kf,"options",options[i].long_name,sw);
    1.89  	}
    1.90 +	else if (options[i].arg==G_OPTION_ARG_STRING)
    1.91 +	{
    1.92 +	    s=*(gchar **)options[i].arg_data;
    1.93 +	    if (!s)
    1.94 +		s="auto";
    1.95 +	    g_key_file_set_string(kf,"options",options[i].long_name,s);
    1.96 +	}
    1.97  	else
    1.98  	    g_assert_not_reached();
    1.99      }
   1.100 @@ -375,7 +432,7 @@
   1.101  void parse_config_file(void)
   1.102  {
   1.103      int i,j;
   1.104 -    gchar *path;
   1.105 +    gchar *path,*s;
   1.106      gchar **keys;
   1.107      gboolean sw;
   1.108      GError *err=NULL;
   1.109 @@ -404,9 +461,35 @@
   1.110  			      path,keys[i],err->message);
   1.111  			    g_clear_error(&err);
   1.112  			}
   1.113 -			if (options[j].flags&G_OPTION_FLAG_REVERSE)
   1.114 -			    sw=!sw;
   1.115 -			*(gboolean *)options[j].arg_data=sw;
   1.116 +			else
   1.117 +			{
   1.118 +			    if (options[j].flags&G_OPTION_FLAG_REVERSE)
   1.119 +				sw=!sw;
   1.120 +			    *(gboolean *)options[j].arg_data=sw;
   1.121 +			}
   1.122 +			break;
   1.123 +		    }
   1.124 +		    else if (options[j].arg==G_OPTION_ARG_STRING)
   1.125 +		    {
   1.126 +			s=g_key_file_get_string(config,"options",keys[i],
   1.127 +			  &err);
   1.128 +			if (err)
   1.129 +			{
   1.130 +			    g_printerr("Bookloupe: %s: options.%s: %s\n",
   1.131 +			      path,keys[i],err->message);
   1.132 +			    g_clear_error(&err);
   1.133 +			}
   1.134 +			else
   1.135 +			{
   1.136 +			    g_free(*(gchar **)options[j].arg_data);
   1.137 +			    if (!g_strcmp0(s,"auto"))
   1.138 +			    {
   1.139 +				*(gchar **)options[j].arg_data=NULL;
   1.140 +				g_free(s);
   1.141 +			    }
   1.142 +			    else
   1.143 +				*(gchar **)options[j].arg_data=s;
   1.144 +			}
   1.145  			break;
   1.146  		    }
   1.147  		    else
   1.148 @@ -475,11 +558,18 @@
   1.149  	pswit[USERTYPO_SWITCH]=FALSE;
   1.150  	pswit[DP_SWITCH]=FALSE;
   1.151      }
   1.152 +    if (opt_charset && !set_charset(opt_charset,&err))
   1.153 +    {
   1.154 +	g_printerr("%s\n",err->message);
   1.155 +	exit(1);
   1.156 +    }
   1.157      if (pswit[DUMP_CONFIG_SWITCH])
   1.158      {
   1.159  	dump_config();
   1.160  	exit(0);
   1.161      }
   1.162 +    g_free(opt_charset);
   1.163 +    opt_charset=NULL;
   1.164      if (pswit[OVERVIEW_SWITCH])
   1.165  	/* just print summary; don't echo */
   1.166  	pswit[ECHO_SWITCH]=FALSE;
   1.167 @@ -542,7 +632,11 @@
   1.168  	exit(1);
   1.169      }
   1.170      if (g_utf8_validate(contents,len,NULL))
   1.171 +    {
   1.172  	utf8=g_utf8_normalize(contents,len,G_NORMALIZE_DEFAULT_COMPOSE);
   1.173 +	if (!charset)
   1.174 +	    (void)set_charset("UNICODE",NULL);
   1.175 +    }
   1.176      else
   1.177  	utf8=g_convert(contents,len,"UTF-8","WINDOWS-1252",NULL,&nb,NULL);
   1.178      g_free(contents);
   1.179 @@ -674,6 +768,7 @@
   1.180      g_free(running_from);
   1.181      if (usertypo)
   1.182  	g_tree_unref(usertypo);
   1.183 +    set_charset(NULL,NULL);
   1.184      if (config)
   1.185  	g_key_file_free(config);
   1.186      return 0;
   1.187 @@ -1024,25 +1119,32 @@
   1.188  	  "Not reporting them.\n",
   1.189  	  results->spacedash+results->emdash.non_PG_space);
   1.190      }
   1.191 -    /* If more than a quarter of characters are hi-bit, bug out. */
   1.192 -    warnings.bin=1;
   1.193 -    if (results->binlen*4>results->totlen)
   1.194 +    if (charset)
   1.195 +	warnings.bin=0;
   1.196 +    else
   1.197      {
   1.198 -	g_print("   --> This file does not appear to be ASCII. "
   1.199 -	  "Terminating. Best of luck with it!\n");
   1.200 -	exit(1);
   1.201 -    }
   1.202 -    if (results->alphalen*4<results->totlen)
   1.203 -    {
   1.204 -	g_print("   --> This file does not appear to be text. "
   1.205 -	  "Terminating. Best of luck with it!\n");
   1.206 -	exit(1);
   1.207 -    }
   1.208 -    if (results->binlen*100>results->totlen || results->binlen>100)
   1.209 -    {
   1.210 -	g_print("   --> There are a lot of foreign letters here. "
   1.211 -	  "Not reporting them.\n");
   1.212 -	warnings.bin=0;
   1.213 +	/* Charset ISO_8859-1/ASCII checks for compatibility with gutcheck */
   1.214 +	warnings.bin=1;
   1.215 +	/* If more than a quarter of characters are hi-bit, bug out. */
   1.216 +	if (results->binlen*4>results->totlen)
   1.217 +	{
   1.218 +	    g_print("   --> This file does not appear to be ASCII. "
   1.219 +	      "Terminating. Best of luck with it!\n");
   1.220 +	    exit(1);
   1.221 +	}
   1.222 +	if (results->alphalen*4<results->totlen)
   1.223 +	{
   1.224 +	    g_print("   --> This file does not appear to be text. "
   1.225 +	      "Terminating. Best of luck with it!\n");
   1.226 +	    exit(1);
   1.227 +	}
   1.228 +	if (results->binlen*100>results->totlen || results->binlen>100)
   1.229 +	{
   1.230 +	    g_print("   --> There are a lot of foreign letters here. "
   1.231 +	      "Not reporting them.\n");
   1.232 +	    if (!pswit[VERBOSE_SWITCH])
   1.233 +		warnings.bin=0;
   1.234 +	}
   1.235      }
   1.236      warnings.isDutch=FALSE;
   1.237      if (results->Dutchcount>50)
   1.238 @@ -1070,7 +1172,6 @@
   1.239      g_print("\n");
   1.240      if (pswit[VERBOSE_SWITCH])
   1.241      {
   1.242 -	warnings.bin=1;
   1.243  	warnings.shortline=1;
   1.244  	warnings.dotcomma=1;
   1.245  	warnings.longline=1;
   1.246 @@ -1265,14 +1366,17 @@
   1.247    gboolean isemptyline)
   1.248  {
   1.249      /* Don't repeat multiple warnings on one line. */
   1.250 -    gboolean eNon_A=FALSE,eTab=FALSE,eTilde=FALSE;
   1.251 +    gboolean eInvalidChar=FALSE,eTab=FALSE,eTilde=FALSE;
   1.252      gboolean eCarat=FALSE,eFSlash=FALSE,eAst=FALSE;
   1.253      const char *s;
   1.254      gunichar c;
   1.255 +    gsize nb;
   1.256 +    gchar *t;
   1.257      for (s=aline;*s;s=g_utf8_next_char(s))
   1.258      {
   1.259  	c=g_utf8_get_char(s);
   1.260 -	if (!eNon_A && (c<CHAR_SPACE && c!='\t' && c!='\n' || c>127))
   1.261 +	if (warnings->bin && !eInvalidChar &&
   1.262 +	  (c<CHAR_SPACE && c!='\t' && c!='\n' || c>127))
   1.263  	{
   1.264  	    if (pswit[ECHO_SWITCH])
   1.265  		g_print("\n%s\n",aline);
   1.266 @@ -1287,7 +1391,57 @@
   1.267  		      linecnt,g_utf8_pointer_to_offset(aline,s)+1,c);
   1.268  	    else
   1.269  		cnt_bin++;
   1.270 -	    eNon_A=TRUE;
   1.271 +	    eInvalidChar=TRUE;
   1.272 +	}
   1.273 +	if (!eInvalidChar && charset)
   1.274 +	{
   1.275 +	    if (charset_validator==(GIConv)-1)
   1.276 +	    {
   1.277 +		if (!g_unichar_isdefined(c))
   1.278 +		{
   1.279 +		    if (pswit[ECHO_SWITCH])
   1.280 +			g_print("\n%s\n",aline);
   1.281 +		    if (!pswit[OVERVIEW_SWITCH])
   1.282 +			g_print("    Line %ld column %ld - Unassigned UNICODE "
   1.283 +			  "code point U+%04" G_GINT32_MODIFIER "X\n",
   1.284 +			  linecnt,g_utf8_pointer_to_offset(aline,s)+1,c);
   1.285 +		    else
   1.286 +			cnt_bin++;
   1.287 +		    eInvalidChar=TRUE;
   1.288 +		}
   1.289 +		else if (c>=0xE000 && c<=0xF8FF || c>=0xF0000 && c<=0xFFFFD ||
   1.290 +		  c>=100000 && c<=0x10FFFD)
   1.291 +		{
   1.292 +		    if (pswit[ECHO_SWITCH])
   1.293 +			g_print("\n%s\n",aline);
   1.294 +		    if (!pswit[OVERVIEW_SWITCH])
   1.295 +			g_print("    Line %ld column %ld - Private Use "
   1.296 +			  "character U+%04" G_GINT32_MODIFIER "X\n",
   1.297 +			  linecnt,g_utf8_pointer_to_offset(aline,s)+1,c);
   1.298 +		    else
   1.299 +			cnt_bin++;
   1.300 +		    eInvalidChar=TRUE;
   1.301 +		}
   1.302 +	    }
   1.303 +	    else
   1.304 +	    {
   1.305 +		t=g_convert_with_iconv(s,g_utf8_next_char(s)-s,
   1.306 +		  charset_validator,NULL,&nb,NULL);
   1.307 +		if (t)
   1.308 +		    g_free(t);
   1.309 +		else
   1.310 +		{
   1.311 +		    if (pswit[ECHO_SWITCH])
   1.312 +			g_print("\n%s\n",aline);
   1.313 +		    if (!pswit[OVERVIEW_SWITCH])
   1.314 +			g_print("    Line %ld column %ld - Non-%s "
   1.315 +			  "character %u\n",linecnt,
   1.316 +			  g_utf8_pointer_to_offset(aline,s)+1,charset,c);
   1.317 +		    else
   1.318 +			cnt_bin++;
   1.319 +		    eInvalidChar=TRUE;
   1.320 +		}
   1.321 +	    }
   1.322  	}
   1.323  	if (!eTab && c==CHAR_TAB)
   1.324  	{
   1.325 @@ -2975,8 +3129,7 @@
   1.326  	if (s>=aline && g_utf8_get_char(s)=='-')
   1.327  	    enddash=TRUE;
   1.328  	check_for_control_characters(aline);
   1.329 -	if (warnings->bin)
   1.330 -	    check_for_odd_characters(aline,warnings,isemptyline);
   1.331 +	check_for_odd_characters(aline,warnings,isemptyline);
   1.332  	if (warnings->longline)
   1.333  	    check_for_long_line(aline);
   1.334  	if (warnings->shortline)