/* C# format strings. Copyright (C) 2003-2004, 2006 Free Software Foundation, Inc. Written by Bruno Haible , 2003. 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 2, 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H # include #endif #include #include #include "format.h" #include "c-ctype.h" #include "xalloc.h" #include "xvasprintf.h" #include "gettext.h" #define _(str) gettext (str) /* C# format strings are described in the description of the .NET System.String class and implemented in pnetlib-0.5.6/runtime/System/String.cs and mcs-0.28/class/corlib/System/String.cs A format string consists of literal text (that is output verbatim), doubled braces ('{{' and '}}', that lead to a single brace when output), and directives. A directive - starts with '{', - is followed by a nonnegative integer m, - is optionally followed by ',' and an integer denoting a width, - is optionally followed by ':' and a sequence of format specifiers. (But the interpretation of the format specifiers is up to the IFormattable implementation, depending on the argument's runtime value. New classes implementing IFormattable can be defined by the user.) - is finished with '}'. */ struct spec { unsigned int directives; unsigned int numbered_arg_count; }; static void * format_parse (const char *format, bool translated, char **invalid_reason) { struct spec spec; struct spec *result; spec.directives = 0; spec.numbered_arg_count = 0; for (; *format != '\0';) { char c = *format++; if (c == '{') { if (*format == '{') format++; else { /* A directive. */ unsigned int number; spec.directives++; if (!c_isdigit (*format)) { *invalid_reason = xasprintf (_("In the directive number %u, '{' is not followed by an argument number."), spec.directives); return NULL; } number = 0; do { number = 10 * number + (*format - '0'); format++; } while (c_isdigit (*format)); if (*format == ',') { /* Parse width. */ format++; if (*format == '-') format++; if (!c_isdigit (*format)) { *invalid_reason = xasprintf (_("In the directive number %u, ',' is not followed by a number."), spec.directives); return NULL; } do format++; while (c_isdigit (*format)); } if (*format == ':') { /* Parse format specifiers. */ do format++; while (*format != '\0' && *format != '}'); } if (*format == '\0') { *invalid_reason = xstrdup (_("The string ends in the middle of a directive: found '{' without matching '}'.")); return NULL; } if (*format != '}') { *invalid_reason = (c_isprint (*format) ? xasprintf (_("The directive number %u ends with an invalid character '%c' instead of '}'."), spec.directives, *format) : xasprintf (_("The directive number %u ends with an invalid character instead of '}'."), spec.directives)); return NULL; } format++; if (spec.numbered_arg_count <= number) spec.numbered_arg_count = number + 1; } } else if (c == '}') { if (*format == '}') format++; else { *invalid_reason = (spec.directives == 0 ? xstrdup (_("The string starts in the middle of a directive: found '}' without matching '{'.")) : xasprintf (_("The string contains a lone '}' after directive number %u."), spec.directives)); return NULL; } } } result = (struct spec *) xmalloc (sizeof (struct spec)); *result = spec; return result; } static void format_free (void *descr) { struct spec *spec = (struct spec *) descr; 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_msgstr) { struct spec *spec1 = (struct spec *) msgid_descr; struct spec *spec2 = (struct spec *) msgstr_descr; bool err = false; /* Check that the argument counts are the same. */ if (equality ? spec1->numbered_arg_count != spec2->numbered_arg_count : spec1->numbered_arg_count < spec2->numbered_arg_count) { if (error_logger) error_logger (_("number of format specifications in 'msgid' and '%s' does not match"), pretty_msgstr); err = true; } return err; } struct formatstring_parser formatstring_csharp = { 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 #include "getline.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->numbered_arg_count; i++) { if (i > 0) printf (" "); printf ("*"); } printf (")"); } 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, &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 --mode=link gcc -o a.out -static -O -g -Wall -I.. -I../lib -I../intl -DHAVE_CONFIG_H -DTEST format-csharp.c ../lib/libgettextlib.la" * End: */ #endif /* TEST */