From abbffdf981c8bb03312024107715d58902914f11 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sat, 22 Jan 2000 05:50:49 +0000 Subject: Update. 2000-01-21 Ulrich Drepper * intl/Makefile (routines): Add dcigettext, dcngettext, dngettxt, ngettext, and plural. (distribute): Add plural.y, po2test.sed, and tst-gettext.sh. (test-srcs): Add tst-gettext. (before-compile): Add $(objpfx)msgs.h. Add rules for plural.c and msgs.h generation and running tst-gettext.\ * intl/Versions [GLIBC_2.2]: Add __dcngettext, dcngettext, dngettext, and ngettext. * intl/dcgettext.c: Move most code into dcigettext.c. Add call dcigettext with appropriate parameters. * intl/dcigettext.c: New file. * intl/dcngettext.c: New file. * intl/dngettext.c: New file. * intl/ngettext.c: New file. * intl/gettextP.h (struct expression): Define. (struct loaded_domain): Add plural and nplurals members. Add prototypes for new internal functions. * intl/libintl.h: Declare new functions. Add optimizations for them. * intl/loadinfo.h: Add new parameter to _nl_find_msg declaration. * intl/loadmsgcat.c (_nl_load_domain): Search for plural information in header entry and parse and store the expression. * intl/plural.y: New file. * intl/po2test.sed: New file. * intl/tst-gettext.c: New file. * intl/tst-gettext.sh: New file. * intl/gettext.c: Call __dcgettext directly. --- intl/plural.y | 290 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 290 insertions(+) create mode 100644 intl/plural.y (limited to 'intl/plural.y') diff --git a/intl/plural.y b/intl/plural.y new file mode 100644 index 0000000000..00b6fccb4f --- /dev/null +++ b/intl/plural.y @@ -0,0 +1,290 @@ +%{ +/* Expression parsing for plural form selection. + Copyright (C) 2000 Free Software Foundation, Inc. + Written by Ulrich Drepper , 2000. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include "gettext.h" +#include "gettextP.h" + +#define YYLEX_PARAM &((struct parse_args *) arg)->cp +#define YYPARSE_PARAM arg +%} +%pure_parser +%expect 10 + +%union { + unsigned long int num; + struct expression *exp; +} + +%{ +/* Prototypes for local functions. */ +static struct expression *new_exp (enum operator op, ...); +static int yylex (YYSTYPE *lval, const char **pexp); +static void yyerror (const char *str); +%} + +%left '?' +%left '|' +%left '&' +%left '=', '!' +%left '+', '-' +%left '*', '/', '%' +%token NUMBER +%type exp + +%% + +start: exp + { + ((struct parse_args *) arg)->res = $1; + } + ; + +exp: exp '?' exp ':' exp + { + if (($$ = new_exp (qmop, $1, $3, $5, NULL)) == NULL) + YYABORT + } + | exp '|' exp + { + if (($$ = new_exp (lor, $1, $3, NULL)) == NULL) + YYABORT + } + | exp '&' exp + { + if (($$ = new_exp (land, $1, $3, NULL)) == NULL) + YYABORT + } + | exp '=' exp + { + if (($$ = new_exp (equal, $1, $3, NULL)) == NULL) + YYABORT + } + | exp '!' exp + { + if (($$ = new_exp (not_equal, $1, $3, NULL)) == NULL) + YYABORT + } + | exp '+' exp + { + if (($$ = new_exp (plus, $1, $3, NULL)) == NULL) + YYABORT + } + | exp '-' exp + { + if (($$ = new_exp (minus, $1, $3, NULL)) == NULL) + YYABORT + } + | exp '*' exp + { + if (($$ = new_exp (mult, $1, $3, NULL)) == NULL) + YYABORT + } + | exp '/' exp + { + if (($$ = new_exp (divide, $1, $3, NULL)) == NULL) + YYABORT + } + | exp '%' exp + { + if (($$ = new_exp (module, $1, $3, NULL)) == NULL) + YYABORT + } + | 'n' + { + if (($$ = new_exp (var, NULL)) == NULL) + YYABORT + } + | NUMBER + { + if (($$ = new_exp (num, NULL)) == NULL) + YYABORT; + $$->val.num = $1 + } + | '(' exp ')' + { + $$ = $2 + } + ; + +%% + +static struct expression * +new_exp (enum operator op, ...) +{ + struct expression *newp = (struct expression *) malloc (sizeof (*newp)); + va_list va; + struct expression *next; + + va_start (va, op); + + if (newp == NULL) + while ((next = va_arg (va, struct expression *)) != NULL) + __gettext_free_exp (next); + else + { + newp->operation = op; + next = va_arg (va, struct expression *); + if (next != NULL) + { + newp->val.args3.bexp = next; + next = va_arg (va, struct expression *); + if (next != NULL) + { + newp->val.args3.tbranch = next; + next = va_arg (va, struct expression *); + if (next != NULL) + newp->val.args3.fbranch = next; + } + } + } + + va_end (va); + + return newp; +} + +void +internal_function +__gettext_free_exp (struct expression *exp) +{ + if (exp == NULL) + return; + + /* Handle the recursive case. */ + switch (exp->operation) + { + case qmop: + __gettext_free_exp (exp->val.args3.fbranch); + /* FALLTHROUGH */ + + case mult: + case divide: + case module: + case plus: + case minus: + case equal: + case not_equal: + case land: + case lor: + __gettext_free_exp (exp->val.args2.right); + __gettext_free_exp (exp->val.args2.left); + break; + + default: + break; + } + + free (exp); +} + + +static int +yylex (YYSTYPE *lval, const char **pexp) +{ + const char *exp = *pexp; + int result; + + while (1) + { + if (exp[0] == '\\' && exp[1] == '\n') + { + exp += 2; + continue; + } + if (exp[0] != '\0' && exp[0] != ' ' && exp[0] != '\t') + break; + + ++exp; + } + + result = *exp++; + switch (result) + { + case '0' ... '9': + { + unsigned long int n = exp[-1] - '0'; + while (exp[0] >= '0' && exp[0] <= '9') + { + n *= 10; + n += exp[0] - '0'; + ++exp; + } + lval->num = n; + result = NUMBER; + } + break; + + case '=': + case '!': + if (exp[0] == '=') + ++exp; + else + result = YYERRCODE; + break; + + case '&': + case '|': + if (exp[0] == result) + ++exp; + else + result = YYERRCODE; + break; + + case 'n': + case '*': + case '/': + case '%': + case '+': + case '-': + case '?': + case ':': + case '(': + case ')': + /* Nothing, just return the character. */ + break; + + case '\n': + case '\0': + /* Be safe and let the user call this function again. */ + --exp; + result = YYEOF; + break; + + default: + result = YYERRCODE; +#if YYDEBUG != 0 + --exp; +#endif + break; + } + + *pexp = exp; + + return result; +} + + +static void +yyerror (const char *str) +{ + /* Do nothing. We don't print error messages here. */ +} -- cgit v1.2.3