| /* GFC (GNU Fortran Compiler) internal format strings. |
| Copyright (C) 2003-2009, 2019-2020 Free Software Foundation, Inc. |
| Written by Bruno Haible <bruno@clisp.org>, 2009. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| |
| #include <stdbool.h> |
| #include <stdlib.h> |
| |
| #include "format.h" |
| #include "c-ctype.h" |
| #include "xalloc.h" |
| #include "xvasprintf.h" |
| #include "format-invalid.h" |
| #include "gettext.h" |
| |
| #define _(str) gettext (str) |
| |
| /* GFC internal format strings consist of format directives that are specific |
| to the GNU Fortran Compiler frontend of GCC, implemented in |
| gcc-4.3.3/gcc/fortran/error.c (function error_print). |
| |
| A directive |
| - starts with '%', |
| - either is finished by '%', that needs no argument, |
| - or is continued like this: |
| - optionally 'm$' where m is a positive integer, |
| - finished by a specifier |
| - 'C', that needs no argument but uses a particular variable |
| (but for the purposes of 'm$' numbering it consumes an |
| argument nevertheless, of 'void' type), |
| - 'L', that needs a 'locus *' argument, |
| - 'i', 'd', that need a signed integer argument, |
| - 'u', that needs an unsigned integer argument, |
| - 'li', 'ld', that need a signed long integer argument, |
| - 'lu', that needs an unsigned long integer argument, |
| - 'c', that needs a character argument, |
| - 's', that needs a string argument. |
| |
| Numbered ('%m$') and unnumbered argument specifications can be used in the |
| same string. The effect of '%m$' is to set the current argument number to |
| m. The current argument number is incremented after processing a directive. |
| |
| When numbered argument specifications are used, specifying the Nth argument |
| requires that all the leading arguments, from the first to the (N-1)th, are |
| specified in the format string. */ |
| |
| enum format_arg_type |
| { |
| FAT_NONE = 0, |
| /* Basic types */ |
| FAT_VOID = 1, |
| FAT_INTEGER = 2, |
| FAT_CHAR = 3, |
| FAT_STRING = 4, |
| FAT_LOCUS = 5, |
| /* Flags */ |
| FAT_UNSIGNED = 1 << 3, |
| FAT_SIZE_LONG = 1 << 4, |
| /* Bitmasks */ |
| FAT_SIZE_MASK = FAT_SIZE_LONG |
| }; |
| #ifdef __cplusplus |
| typedef int format_arg_type_t; |
| #else |
| typedef enum format_arg_type format_arg_type_t; |
| #endif |
| |
| struct numbered_arg |
| { |
| unsigned int number; |
| format_arg_type_t type; |
| }; |
| |
| struct unnumbered_arg |
| { |
| format_arg_type_t type; |
| }; |
| |
| struct spec |
| { |
| unsigned int directives; |
| unsigned int unnumbered_arg_count; |
| struct unnumbered_arg *unnumbered; |
| bool uses_currentloc; |
| }; |
| |
| /* Locale independent test for a decimal digit. |
| Argument can be 'char' or 'unsigned char'. (Whereas the argument of |
| <ctype.h> isdigit must be an 'unsigned char'.) */ |
| #undef isdigit |
| #define isdigit(c) ((unsigned int) ((c) - '0') < 10) |
| |
| |
| static int |
| numbered_arg_compare (const void *p1, const void *p2) |
| { |
| unsigned int n1 = ((const struct numbered_arg *) p1)->number; |
| unsigned int n2 = ((const struct numbered_arg *) p2)->number; |
| |
| return (n1 > n2 ? 1 : n1 < n2 ? -1 : 0); |
| } |
| |
| static void * |
| format_parse (const char *format, bool translated, char *fdi, |
| char **invalid_reason) |
| { |
| const char *const format_start = format; |
| struct spec spec; |
| unsigned int numbered_arg_count; |
| unsigned int numbered_allocated; |
| struct numbered_arg *numbered; |
| struct spec *result; |
| unsigned int number; |
| |
| spec.directives = 0; |
| numbered_arg_count = 0; |
| numbered_allocated = 0; |
| numbered = NULL; |
| spec.uses_currentloc = false; |
| number = 1; |
| |
| for (; *format != '\0';) |
| if (*format++ == '%') |
| { |
| /* A directive. */ |
| FDI_SET (format - 1, FMTDIR_START); |
| spec.directives++; |
| |
| if (*format != '%') |
| { |
| format_arg_type_t type; |
| |
| if (isdigit (*format)) |
| { |
| const char *f = format; |
| unsigned int m = 0; |
| |
| do |
| { |
| m = 10 * m + (*f - '0'); |
| f++; |
| } |
| while (isdigit (*f)); |
| |
| if (*f == '$') |
| { |
| if (m == 0) |
| { |
| *invalid_reason = INVALID_ARGNO_0 (spec.directives); |
| FDI_SET (f, FMTDIR_ERROR); |
| goto bad_format; |
| } |
| number = m; |
| format = ++f; |
| } |
| } |
| |
| if (*format == 'C') |
| { |
| type = FAT_VOID; |
| spec.uses_currentloc = true; |
| } |
| else if (*format == 'L') |
| type = FAT_LOCUS; |
| else if (*format == 'c') |
| type = FAT_CHAR; |
| else if (*format == 's') |
| type = FAT_STRING; |
| else |
| { |
| format_arg_type_t size = 0; |
| |
| if (*format == 'l') |
| { |
| ++format; |
| size = FAT_SIZE_LONG; |
| } |
| |
| if (*format == 'i' || *format == 'd') |
| type = FAT_INTEGER | size; |
| else if (*format == 'u') |
| type = FAT_INTEGER | FAT_UNSIGNED | size; |
| else |
| { |
| if (*format == '\0') |
| { |
| *invalid_reason = INVALID_UNTERMINATED_DIRECTIVE (); |
| FDI_SET (format - 1, FMTDIR_ERROR); |
| } |
| else |
| { |
| *invalid_reason = |
| INVALID_CONVERSION_SPECIFIER (spec.directives, *format); |
| FDI_SET (format, FMTDIR_ERROR); |
| } |
| goto bad_format; |
| } |
| } |
| |
| if (numbered_allocated == numbered_arg_count) |
| { |
| numbered_allocated = 2 * numbered_allocated + 1; |
| numbered = (struct numbered_arg *) xrealloc (numbered, numbered_allocated * sizeof (struct numbered_arg)); |
| } |
| numbered[numbered_arg_count].number = number; |
| numbered[numbered_arg_count].type = type; |
| numbered_arg_count++; |
| |
| number++; |
| } |
| |
| FDI_SET (format, FMTDIR_END); |
| |
| format++; |
| } |
| |
| /* Sort the numbered argument array, and eliminate duplicates. */ |
| if (numbered_arg_count > 1) |
| { |
| unsigned int i, j; |
| bool err; |
| |
| qsort (numbered, numbered_arg_count, |
| sizeof (struct numbered_arg), numbered_arg_compare); |
| |
| /* Remove duplicates: Copy from i to j, keeping 0 <= j <= i. */ |
| err = false; |
| for (i = j = 0; i < numbered_arg_count; i++) |
| if (j > 0 && numbered[i].number == numbered[j-1].number) |
| { |
| format_arg_type_t type1 = numbered[i].type; |
| format_arg_type_t type2 = numbered[j-1].type; |
| format_arg_type_t type_both; |
| |
| if (type1 == type2) |
| type_both = type1; |
| else |
| { |
| /* Incompatible types. */ |
| type_both = FAT_NONE; |
| if (!err) |
| *invalid_reason = |
| INVALID_INCOMPATIBLE_ARG_TYPES (numbered[i].number); |
| err = true; |
| } |
| |
| numbered[j-1].type = type_both; |
| } |
| else |
| { |
| if (j < i) |
| { |
| numbered[j].number = numbered[i].number; |
| numbered[j].type = numbered[i].type; |
| } |
| j++; |
| } |
| numbered_arg_count = j; |
| if (err) |
| /* *invalid_reason has already been set above. */ |
| goto bad_format; |
| } |
| |
| /* Verify that the format strings uses all arguments up to the highest |
| numbered one. */ |
| { |
| unsigned int i; |
| |
| for (i = 0; i < numbered_arg_count; i++) |
| if (numbered[i].number != i + 1) |
| { |
| *invalid_reason = |
| xasprintf (_("The string refers to argument number %u but ignores argument number %u."), numbered[i].number, i + 1); |
| goto bad_format; |
| } |
| } |
| |
| /* So now the numbered arguments array is equivalent to a sequence |
| of unnumbered arguments. Eliminate the FAT_VOID placeholders. */ |
| { |
| unsigned int i; |
| |
| spec.unnumbered_arg_count = 0; |
| for (i = 0; i < numbered_arg_count; i++) |
| if (numbered[i].type != FAT_VOID) |
| spec.unnumbered_arg_count++; |
| |
| if (spec.unnumbered_arg_count > 0) |
| { |
| unsigned int j; |
| |
| spec.unnumbered = XNMALLOC (spec.unnumbered_arg_count, struct unnumbered_arg); |
| j = 0; |
| for (i = 0; i < numbered_arg_count; i++) |
| if (numbered[i].type != FAT_VOID) |
| spec.unnumbered[j++].type = numbered[i].type; |
| } |
| else |
| spec.unnumbered = NULL; |
| } |
| free (numbered); |
| |
| result = XMALLOC (struct spec); |
| *result = spec; |
| return result; |
| |
| bad_format: |
| if (numbered != NULL) |
| free (numbered); |
| return NULL; |
| } |
| |
| static void |
| format_free (void *descr) |
| { |
| struct spec *spec = (struct spec *) descr; |
| |
| if (spec->unnumbered != NULL) |
| free (spec->unnumbered); |
| free (spec); |
| } |
| |
| static int |
| format_get_number_of_directives (void *descr) |
| { |
| struct spec *spec = (struct spec *) descr; |
| |
| return spec->directives; |
| } |
| |
| static bool |
| format_check (void *msgid_descr, void *msgstr_descr, bool equality, |
| formatstring_error_logger_t error_logger, |
| const char *pretty_msgid, const char *pretty_msgstr) |
| { |
| struct spec *spec1 = (struct spec *) msgid_descr; |
| struct spec *spec2 = (struct spec *) msgstr_descr; |
| bool err = false; |
| unsigned int i; |
| |
| /* Check the argument types are the same. */ |
| if (equality |
| ? spec1->unnumbered_arg_count != spec2->unnumbered_arg_count |
| : spec1->unnumbered_arg_count < spec2->unnumbered_arg_count) |
| { |
| if (error_logger) |
| error_logger (_("number of format specifications in '%s' and '%s' does not match"), |
| pretty_msgid, pretty_msgstr); |
| err = true; |
| } |
| else |
| for (i = 0; i < spec2->unnumbered_arg_count; i++) |
| if (spec1->unnumbered[i].type != spec2->unnumbered[i].type) |
| { |
| if (error_logger) |
| error_logger (_("format specifications in '%s' and '%s' for argument %u are not the same"), |
| pretty_msgid, pretty_msgstr, i + 1); |
| err = true; |
| } |
| |
| /* Check that the use of currentloc is the same. */ |
| if (spec1->uses_currentloc != spec2->uses_currentloc) |
| { |
| if (error_logger) |
| { |
| if (spec1->uses_currentloc) |
| error_logger (_("'%s' uses %%C but '%s' doesn't"), |
| pretty_msgid, pretty_msgstr); |
| else |
| error_logger (_("'%s' does not use %%C but '%s' uses %%C"), |
| pretty_msgid, pretty_msgstr); |
| } |
| err = true; |
| } |
| |
| return err; |
| } |
| |
| |
| struct formatstring_parser formatstring_gfc_internal = |
| { |
| format_parse, |
| format_free, |
| format_get_number_of_directives, |
| NULL, |
| format_check |
| }; |
| |
| |
| #ifdef TEST |
| |
| /* Test program: Print the argument list specification returned by |
| format_parse for strings read from standard input. */ |
| |
| #include <stdio.h> |
| |
| static void |
| format_print (void *descr) |
| { |
| struct spec *spec = (struct spec *) descr; |
| unsigned int i; |
| |
| if (spec == NULL) |
| { |
| printf ("INVALID"); |
| return; |
| } |
| |
| printf ("("); |
| for (i = 0; i < spec->unnumbered_arg_count; i++) |
| { |
| if (i > 0) |
| printf (" "); |
| if (spec->unnumbered[i].type & FAT_UNSIGNED) |
| printf ("[unsigned]"); |
| switch (spec->unnumbered[i].type & FAT_SIZE_MASK) |
| { |
| case 0: |
| break; |
| case FAT_SIZE_LONG: |
| printf ("[long]"); |
| break; |
| default: |
| abort (); |
| } |
| switch (spec->unnumbered[i].type & ~(FAT_UNSIGNED | FAT_SIZE_MASK)) |
| { |
| case FAT_INTEGER: |
| printf ("i"); |
| break; |
| case FAT_CHAR: |
| printf ("c"); |
| break; |
| case FAT_STRING: |
| printf ("s"); |
| break; |
| case FAT_LOCUS: |
| printf ("L"); |
| break; |
| default: |
| abort (); |
| } |
| } |
| printf (")"); |
| if (spec->uses_currentloc) |
| printf (" C"); |
| } |
| |
| int |
| main () |
| { |
| for (;;) |
| { |
| char *line = NULL; |
| size_t line_size = 0; |
| int line_len; |
| char *invalid_reason; |
| void *descr; |
| |
| line_len = getline (&line, &line_size, stdin); |
| if (line_len < 0) |
| break; |
| if (line_len > 0 && line[line_len - 1] == '\n') |
| line[--line_len] = '\0'; |
| |
| invalid_reason = NULL; |
| descr = format_parse (line, false, NULL, &invalid_reason); |
| |
| format_print (descr); |
| printf ("\n"); |
| if (descr == NULL) |
| printf ("%s\n", invalid_reason); |
| |
| free (invalid_reason); |
| free (line); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * For Emacs M-x compile |
| * Local Variables: |
| * compile-command: "/bin/sh ../libtool --tag=CC --mode=link gcc -o a.out -static -O -g -Wall -I.. -I../gnulib-lib -I../../gettext-runtime/intl -DHAVE_CONFIG_H -DTEST format-gfc-internal.c ../gnulib-lib/libgettextlib.la" |
| * End: |
| */ |
| |
| #endif /* TEST */ |