1 /* librep format strings.
2 Copyright (C) 2001-2004, 2006-2007, 2009 Free Software Foundation, Inc.
3 Written by Bruno Haible <haible@clisp.cons.org>, 2001.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "xvasprintf.h"
29 #include "format-invalid.h"
32 #define _(str) gettext (str)
34 /* librep format strings are implemented in librep-0.14/src/streams.c.
36 - starts with '%' or '%m$' where m is a positive integer,
37 - is optionally followed by any of the characters '-', '^', '0', '+', ' ',
38 each of which acts as a flag,
39 - is optionally followed by a width specification: a nonempty digit
41 - is optionally followed by '.' and a precision specification: a nonempty
43 - is finished by a specifier
44 - '%', that needs no argument,
45 - 'c', that need a character argument,
46 - 'd', 'x', 'X', 'o', that need an integer argument,
47 - 's', that need an argument and prints it using princ,
48 - 'S', that need an argument and prints it using prin1.
49 Numbered ('%m$') and unnumbered argument specifications can be used in the
50 same string. The effect of '%m$' is to set the current argument number to
51 m. The current argument number is incremented after processing a directive.
66 enum format_arg_type type;
71 unsigned int directives;
72 unsigned int numbered_arg_count;
73 unsigned int allocated;
74 struct numbered_arg *numbered;
77 /* Locale independent test for a decimal digit.
78 Argument can be 'char' or 'unsigned char'. (Whereas the argument of
79 <ctype.h> isdigit must be an 'unsigned char'.) */
81 #define isdigit(c) ((unsigned int) ((c) - '0') < 10)
85 numbered_arg_compare (const void *p1, const void *p2)
87 unsigned int n1 = ((const struct numbered_arg *) p1)->number;
88 unsigned int n2 = ((const struct numbered_arg *) p2)->number;
90 return (n1 > n2 ? 1 : n1 < n2 ? -1 : 0);
94 format_parse (const char *format, bool translated, char *fdi,
95 char **invalid_reason)
97 const char *const format_start = format;
103 spec.numbered_arg_count = 0;
105 spec.numbered = NULL;
108 for (; *format != '\0';)
109 if (*format++ == '%')
112 enum format_arg_type type;
114 FDI_SET (format - 1, FMTDIR_START);
117 if (isdigit (*format))
119 const char *f = format;
124 m = 10 * m + (*f - '0');
127 while (isdigit (*f));
129 if (*f == '$' && m > 0)
137 while (*format == '-' || *format == '^' || *format == '0'
138 || *format == '+' || *format == ' ')
142 if (isdigit (*format))
144 do format++; while (isdigit (*format));
147 /* Parse precision. */
152 if (isdigit (*format))
154 do format++; while (isdigit (*format));
164 type = FAT_CHARACTER;
166 case 'd': case 'x': case 'X': case 'o':
170 type = FAT_OBJECT_PRETTY;
178 *invalid_reason = INVALID_UNTERMINATED_DIRECTIVE ();
179 FDI_SET (format - 1, FMTDIR_ERROR);
184 INVALID_CONVERSION_SPECIFIER (spec.directives, *format);
185 FDI_SET (format, FMTDIR_ERROR);
190 if (type != FAT_NONE)
192 if (spec.allocated == spec.numbered_arg_count)
194 spec.allocated = 2 * spec.allocated + 1;
195 spec.numbered = (struct numbered_arg *) xrealloc (spec.numbered, spec.allocated * sizeof (struct numbered_arg));
197 spec.numbered[spec.numbered_arg_count].number = number;
198 spec.numbered[spec.numbered_arg_count].type = type;
199 spec.numbered_arg_count++;
204 FDI_SET (format, FMTDIR_END);
209 /* Sort the numbered argument array, and eliminate duplicates. */
210 if (spec.numbered_arg_count > 1)
215 qsort (spec.numbered, spec.numbered_arg_count,
216 sizeof (struct numbered_arg), numbered_arg_compare);
218 /* Remove duplicates: Copy from i to j, keeping 0 <= j <= i. */
220 for (i = j = 0; i < spec.numbered_arg_count; i++)
221 if (j > 0 && spec.numbered[i].number == spec.numbered[j-1].number)
223 enum format_arg_type type1 = spec.numbered[i].type;
224 enum format_arg_type type2 = spec.numbered[j-1].type;
225 enum format_arg_type type_both;
231 /* Incompatible types. */
232 type_both = FAT_NONE;
235 INVALID_INCOMPATIBLE_ARG_TYPES (spec.numbered[i].number);
239 spec.numbered[j-1].type = type_both;
245 spec.numbered[j].number = spec.numbered[i].number;
246 spec.numbered[j].type = spec.numbered[i].type;
250 spec.numbered_arg_count = j;
252 /* *invalid_reason has already been set above. */
256 result = XMALLOC (struct spec);
261 if (spec.numbered != NULL)
262 free (spec.numbered);
267 format_free (void *descr)
269 struct spec *spec = (struct spec *) descr;
271 if (spec->numbered != NULL)
272 free (spec->numbered);
277 format_get_number_of_directives (void *descr)
279 struct spec *spec = (struct spec *) descr;
281 return spec->directives;
285 format_check (void *msgid_descr, void *msgstr_descr, bool equality,
286 formatstring_error_logger_t error_logger,
287 const char *pretty_msgid, const char *pretty_msgstr)
289 struct spec *spec1 = (struct spec *) msgid_descr;
290 struct spec *spec2 = (struct spec *) msgstr_descr;
293 if (spec1->numbered_arg_count + spec2->numbered_arg_count > 0)
296 unsigned int n1 = spec1->numbered_arg_count;
297 unsigned int n2 = spec2->numbered_arg_count;
299 /* Check the argument names are the same.
300 Both arrays are sorted. We search for the first difference. */
301 for (i = 0, j = 0; i < n1 || j < n2; )
303 int cmp = (i >= n1 ? 1 :
305 spec1->numbered[i].number > spec2->numbered[j].number ? 1 :
306 spec1->numbered[i].number < spec2->numbered[j].number ? -1 :
312 error_logger (_("a format specification for argument %u, as in '%s', doesn't exist in '%s'"),
313 spec2->numbered[j].number, pretty_msgstr,
323 error_logger (_("a format specification for argument %u doesn't exist in '%s'"),
324 spec1->numbered[i].number, pretty_msgstr);
334 /* Check the argument types are the same. */
336 for (i = 0, j = 0; j < n2; )
338 if (spec1->numbered[i].number == spec2->numbered[j].number)
340 if (spec1->numbered[i].type != spec2->numbered[j].type)
343 error_logger (_("format specifications in '%s' and '%s' for argument %u are not the same"),
344 pretty_msgid, pretty_msgstr,
345 spec2->numbered[j].number);
360 struct formatstring_parser formatstring_librep =
364 format_get_number_of_directives,
372 /* Test program: Print the argument list specification returned by
373 format_parse for strings read from standard input. */
378 format_print (void *descr)
380 struct spec *spec = (struct spec *) descr;
392 for (i = 0; i < spec->numbered_arg_count; i++)
394 unsigned int number = spec->numbered[i].number;
400 for (; last < number; last++)
402 switch (spec->numbered[i].type)
410 case FAT_OBJECT_PRETTY:
430 size_t line_size = 0;
432 char *invalid_reason;
435 line_len = getline (&line, &line_size, stdin);
438 if (line_len > 0 && line[line_len - 1] == '\n')
439 line[--line_len] = '\0';
441 invalid_reason = NULL;
442 descr = format_parse (line, false, NULL, &invalid_reason);
444 format_print (descr);
447 printf ("%s\n", invalid_reason);
449 free (invalid_reason);
457 * For Emacs M-x compile
459 * compile-command: "/bin/sh ../libtool --tag=CC --mode=link gcc -o a.out -static -O -g -Wall -I.. -I../gnulib-lib -I../intl -DHAVE_CONFIG_H -DTEST format-librep.c ../gnulib-lib/libgettextlib.la"