From 0a27d8bfe5fa36d8cb600b5b520f9b5c7fbf0ed6 Mon Sep 17 00:00:00 2001 From: "Kevin P. Fleming" Date: Mon, 21 Aug 2006 02:11:39 +0000 Subject: merge new_loader_completion branch, including (at least): - restructured build tree and makefiles to eliminate recursion problems - support for embedded modules - support for static builds - simpler cross-compilation support - simpler module/loader interface (no exported symbols) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@40722 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- ast_expr2.y | 1045 ----------------------------------------------------------- 1 file changed, 1045 deletions(-) delete mode 100644 ast_expr2.y (limited to 'ast_expr2.y') diff --git a/ast_expr2.y b/ast_expr2.y deleted file mode 100644 index 85c34b2c9..000000000 --- a/ast_expr2.y +++ /dev/null @@ -1,1045 +0,0 @@ -%{ -/* Written by Pace Willisson (pace@blitz.com) - * and placed in the public domain. - * - * Largely rewritten by J.T. Conklin (jtc@wimsey.com) - * - * And then overhauled twice by Steve Murphy (murf@e-tools.com) - * to add double-quoted strings, allow mult. spaces, improve - * error messages, and then to fold in a flex scanner for the - * yylex operation. - * - * $FreeBSD: src/bin/expr/expr.y,v 1.16 2000/07/22 10:59:36 se Exp $ - */ - -#include "asterisk.h" - -#ifndef STANDALONE -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") -#endif - -#include -#include -#include -#include -#include -#include -#include -#if !defined(SOLARIS) && !defined(__CYGWIN__) -#include -#else -#define quad_t int64_t -#endif -#include -#include -#include - -#include "asterisk/ast_expr.h" -#include "asterisk/logger.h" - -#if defined(LONG_LONG_MIN) && !defined(QUAD_MIN) -#define QUAD_MIN LONG_LONG_MIN -#endif -#if defined(LONG_LONG_MAX) && !defined(QUAD_MAX) -#define QUAD_MAX LONG_LONG_MAX -#endif - -# if ! defined(QUAD_MIN) -# define QUAD_MIN (-0x7fffffffffffffffLL-1) -# endif -# if ! defined(QUAD_MAX) -# define QUAD_MAX (0x7fffffffffffffffLL) -# endif - -#define YYPARSE_PARAM parseio -#define YYLEX_PARAM ((struct parse_io *)parseio)->scanner -#define YYERROR_VERBOSE 1 -extern char extra_error_message[4095]; -extern int extra_error_message_supplied; - -enum valtype { - AST_EXPR_integer, AST_EXPR_numeric_string, AST_EXPR_string -} ; - -#ifdef STANDALONE -void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...) __attribute__ ((format (printf,5,6))); -#endif - -struct val { - enum valtype type; - union { - char *s; - quad_t i; - } u; -} ; - -typedef void *yyscan_t; - -struct parse_io -{ - char *string; - struct val *val; - yyscan_t scanner; -}; - -static int chk_div __P((quad_t, quad_t)); -static int chk_minus __P((quad_t, quad_t, quad_t)); -static int chk_plus __P((quad_t, quad_t, quad_t)); -static int chk_times __P((quad_t, quad_t, quad_t)); -static void free_value __P((struct val *)); -static int is_zero_or_null __P((struct val *)); -static int isstring __P((struct val *)); -static struct val *make_integer __P((quad_t)); -static struct val *make_str __P((const char *)); -static struct val *op_and __P((struct val *, struct val *)); -static struct val *op_colon __P((struct val *, struct val *)); -static struct val *op_eqtilde __P((struct val *, struct val *)); -static struct val *op_div __P((struct val *, struct val *)); -static struct val *op_eq __P((struct val *, struct val *)); -static struct val *op_ge __P((struct val *, struct val *)); -static struct val *op_gt __P((struct val *, struct val *)); -static struct val *op_le __P((struct val *, struct val *)); -static struct val *op_lt __P((struct val *, struct val *)); -static struct val *op_cond __P((struct val *, struct val *, struct val *)); -static struct val *op_minus __P((struct val *, struct val *)); -static struct val *op_negate __P((struct val *)); -static struct val *op_compl __P((struct val *)); -static struct val *op_ne __P((struct val *, struct val *)); -static struct val *op_or __P((struct val *, struct val *)); -static struct val *op_plus __P((struct val *, struct val *)); -static struct val *op_rem __P((struct val *, struct val *)); -static struct val *op_times __P((struct val *, struct val *)); -static quad_t to_integer __P((struct val *)); -static void to_string __P((struct val *)); - -/* uh, if I want to predeclare yylex with a YYLTYPE, I have to predeclare the yyltype... sigh */ -typedef struct yyltype -{ - int first_line; - int first_column; - - int last_line; - int last_column; -} yyltype; - -# define YYLTYPE yyltype -# define YYLTYPE_IS_TRIVIAL 1 - -/* we will get warning about no prototype for yylex! But we can't - define it here, we have no definition yet for YYSTYPE. */ - -int ast_yyerror(const char *,YYLTYPE *, struct parse_io *); - -/* I wanted to add args to the yyerror routine, so I could print out - some useful info about the error. Not as easy as it looks, but it - is possible. */ -#define ast_yyerror(x) ast_yyerror(x,&yyloc,parseio) -#define DESTROY(x) {if((x)->type == AST_EXPR_numeric_string || (x)->type == AST_EXPR_string) free((x)->u.s); (x)->u.s = 0; free(x);} -%} - -%pure-parser -%locations -/* %debug for when you are having big problems */ - -/* %name-prefix="ast_yy" */ - -%union -{ - struct val *val; -} - -%{ -extern int ast_yylex __P((YYSTYPE *, YYLTYPE *, yyscan_t)); -%} -%left TOK_COND TOK_COLONCOLON -%left TOK_OR -%left TOK_AND -%left TOK_EQ TOK_GT TOK_LT TOK_GE TOK_LE TOK_NE -%left TOK_PLUS TOK_MINUS -%left TOK_MULT TOK_DIV TOK_MOD -%right TOK_COMPL -%left TOK_COLON TOK_EQTILDE -%left TOK_RP TOK_LP - - -%token TOKEN -%type start expr - - -%destructor { free_value($$); } expr TOKEN TOK_COND TOK_COLONCOLON TOK_OR TOK_AND TOK_EQ - TOK_GT TOK_LT TOK_GE TOK_LE TOK_NE TOK_PLUS TOK_MINUS TOK_MULT TOK_DIV TOK_MOD TOK_COMPL TOK_COLON TOK_EQTILDE - TOK_RP TOK_LP - -%% - -start: expr { ((struct parse_io *)parseio)->val = (struct val *)calloc(sizeof(struct val),1); - ((struct parse_io *)parseio)->val->type = $1->type; - if( $1->type == AST_EXPR_integer ) - ((struct parse_io *)parseio)->val->u.i = $1->u.i; - else - ((struct parse_io *)parseio)->val->u.s = $1->u.s; - free($1); - } - | {/* nothing */ ((struct parse_io *)parseio)->val = (struct val *)calloc(sizeof(struct val),1); - ((struct parse_io *)parseio)->val->type = AST_EXPR_string; - ((struct parse_io *)parseio)->val->u.s = strdup(""); - } - - ; - -expr: TOKEN { $$= $1;} - | TOK_LP expr TOK_RP { $$ = $2; - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0; - DESTROY($1); DESTROY($3); } - | expr TOK_OR expr { $$ = op_or ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_AND expr { $$ = op_and ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_EQ expr { $$ = op_eq ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_GT expr { $$ = op_gt ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_LT expr { $$ = op_lt ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_GE expr { $$ = op_ge ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_LE expr { $$ = op_le ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_NE expr { $$ = op_ne ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_PLUS expr { $$ = op_plus ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_MINUS expr { $$ = op_minus ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | TOK_MINUS expr %prec TOK_COMPL { $$ = op_negate ($2); - DESTROY($1); - @$.first_column = @1.first_column; @$.last_column = @2.last_column; - @$.first_line=0; @$.last_line=0;} - | TOK_COMPL expr { $$ = op_compl ($2); - DESTROY($1); - @$.first_column = @1.first_column; @$.last_column = @2.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_MULT expr { $$ = op_times ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_DIV expr { $$ = op_div ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_MOD expr { $$ = op_rem ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_COLON expr { $$ = op_colon ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_EQTILDE expr { $$ = op_eqtilde ($1, $3); - DESTROY($2); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - | expr TOK_COND expr TOK_COLONCOLON expr { $$ = op_cond ($1, $3, $5); - DESTROY($2); - DESTROY($4); - @$.first_column = @1.first_column; @$.last_column = @3.last_column; - @$.first_line=0; @$.last_line=0;} - ; - -%% - -static struct val * -make_integer (quad_t i) -{ - struct val *vp; - - vp = (struct val *) malloc (sizeof (*vp)); - if (vp == NULL) { - ast_log(LOG_WARNING, "malloc() failed\n"); - return(NULL); - } - - vp->type = AST_EXPR_integer; - vp->u.i = i; - return vp; -} - -static struct val * -make_str (const char *s) -{ - struct val *vp; - size_t i; - int isint; - - vp = (struct val *) malloc (sizeof (*vp)); - if (vp == NULL || ((vp->u.s = strdup (s)) == NULL)) { - ast_log(LOG_WARNING,"malloc() failed\n"); - return(NULL); - } - - for(i = 1, isint = isdigit(s[0]) || s[0] == '-'; - isint && i < strlen(s); - i++) - { - if(!isdigit(s[i])) - isint = 0; - } - - if (isint) - vp->type = AST_EXPR_numeric_string; - else - vp->type = AST_EXPR_string; - - return vp; -} - - -static void -free_value (struct val *vp) -{ - if (vp==NULL) { - return; - } - if (vp->type == AST_EXPR_string || vp->type == AST_EXPR_numeric_string) - free (vp->u.s); - free(vp); -} - - -static quad_t -to_integer (struct val *vp) -{ - quad_t i; - - if (vp == NULL) { - ast_log(LOG_WARNING,"vp==NULL in to_integer()\n"); - return(0); - } - - if (vp->type == AST_EXPR_integer) - return 1; - - if (vp->type == AST_EXPR_string) - return 0; - - /* vp->type == AST_EXPR_numeric_string, make it numeric */ - errno = 0; - i = strtoll(vp->u.s, (char**)NULL, 10); - if (errno != 0) { - ast_log(LOG_WARNING,"Conversion of %s to integer under/overflowed!\n", vp->u.s); - free(vp->u.s); - vp->u.s = 0; - return(0); - } - free (vp->u.s); - vp->u.i = i; - vp->type = AST_EXPR_integer; - return 1; -} - -static void -strip_quotes(struct val *vp) -{ - if (vp->type != AST_EXPR_string && vp->type != AST_EXPR_numeric_string) - return; - - if( vp->u.s[0] == '"' && vp->u.s[strlen(vp->u.s)-1] == '"' ) - { - char *f, *t; - f = vp->u.s; - t = vp->u.s; - - while( *f ) - { - if( *f && *f != '"' ) - *t++ = *f++; - else - f++; - } - *t = *f; - } -} - -static void -to_string (struct val *vp) -{ - char *tmp; - - if (vp->type == AST_EXPR_string || vp->type == AST_EXPR_numeric_string) - return; - - tmp = malloc ((size_t)25); - if (tmp == NULL) { - ast_log(LOG_WARNING,"malloc() failed\n"); - return; - } - - sprintf(tmp, "%ld", (long int) vp->u.i); - vp->type = AST_EXPR_string; - vp->u.s = tmp; -} - - -static int -isstring (struct val *vp) -{ - /* only TRUE if this string is not a valid integer */ - return (vp->type == AST_EXPR_string); -} - - -static int -is_zero_or_null (struct val *vp) -{ - if (vp->type == AST_EXPR_integer) { - return (vp->u.i == 0); - } else { - return (*vp->u.s == 0 || (to_integer (vp) && vp->u.i == 0)); - } - /* NOTREACHED */ -} - -#ifdef STANDALONE - -void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...) -{ - va_list vars; - va_start(vars,fmt); - - printf("LOG: lev:%d file:%s line:%d func: %s ", - level, file, line, function); - vprintf(fmt, vars); - fflush(stdout); - va_end(vars); -} - - -int main(int argc,char **argv) { - char s[4096]; - char out[4096]; - FILE *infile; - - if( !argv[1] ) - exit(20); - - if( access(argv[1],F_OK)== 0 ) - { - int ret; - - infile = fopen(argv[1],"r"); - if( !infile ) - { - printf("Sorry, couldn't open %s for reading!\n", argv[1]); - exit(10); - } - while( fgets(s,sizeof(s),infile) ) - { - if( s[strlen(s)-1] == '\n' ) - s[strlen(s)-1] = 0; - - ret = ast_expr(s, out, sizeof(out)); - printf("Expression: %s Result: [%d] '%s'\n", - s, ret, out); - } - fclose(infile); - } - else - { - if (ast_expr(argv[1], s, sizeof(s))) - printf("=====%s======\n",s); - else - printf("No result\n"); - } -} - -#endif - -#undef ast_yyerror -#define ast_yyerror(x) ast_yyerror(x, YYLTYPE *yylloc, struct parse_io *parseio) - -/* I put the ast_yyerror func in the flex input file, - because it refers to the buffer state. Best to - let it access the BUFFER stuff there and not trying - define all the structs, macros etc. in this file! */ - - -static struct val * -op_or (struct val *a, struct val *b) -{ - if (is_zero_or_null (a)) { - free_value (a); - return (b); - } else { - free_value (b); - return (a); - } -} - -static struct val * -op_and (struct val *a, struct val *b) -{ - if (is_zero_or_null (a) || is_zero_or_null (b)) { - free_value (a); - free_value (b); - return (make_integer ((quad_t)0)); - } else { - free_value (b); - return (a); - } -} - -static struct val * -op_eq (struct val *a, struct val *b) -{ - struct val *r; - - if (isstring (a) || isstring (b)) { - to_string (a); - to_string (b); - r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) == 0)); - } else { -#ifdef DEBUG_FOR_CONVERSIONS - char buffer[2000]; - sprintf(buffer,"Converting '%s' and '%s' ", a->u.s, b->u.s); -#endif - (void)to_integer(a); - (void)to_integer(b); -#ifdef DEBUG_FOR_CONVERSIONS - ast_log(LOG_WARNING,"%s to '%lld' and '%lld'\n", buffer, a->u.i, b->u.i); -#endif - r = make_integer ((quad_t)(a->u.i == b->u.i)); - } - - free_value (a); - free_value (b); - return r; -} - -static struct val * -op_gt (struct val *a, struct val *b) -{ - struct val *r; - - if (isstring (a) || isstring (b)) { - to_string (a); - to_string (b); - r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) > 0)); - } else { - (void)to_integer(a); - (void)to_integer(b); - r = make_integer ((quad_t)(a->u.i > b->u.i)); - } - - free_value (a); - free_value (b); - return r; -} - -static struct val * -op_lt (struct val *a, struct val *b) -{ - struct val *r; - - if (isstring (a) || isstring (b)) { - to_string (a); - to_string (b); - r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) < 0)); - } else { - (void)to_integer(a); - (void)to_integer(b); - r = make_integer ((quad_t)(a->u.i < b->u.i)); - } - - free_value (a); - free_value (b); - return r; -} - -static struct val * -op_ge (struct val *a, struct val *b) -{ - struct val *r; - - if (isstring (a) || isstring (b)) { - to_string (a); - to_string (b); - r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) >= 0)); - } else { - (void)to_integer(a); - (void)to_integer(b); - r = make_integer ((quad_t)(a->u.i >= b->u.i)); - } - - free_value (a); - free_value (b); - return r; -} - -static struct val * -op_le (struct val *a, struct val *b) -{ - struct val *r; - - if (isstring (a) || isstring (b)) { - to_string (a); - to_string (b); - r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) <= 0)); - } else { - (void)to_integer(a); - (void)to_integer(b); - r = make_integer ((quad_t)(a->u.i <= b->u.i)); - } - - free_value (a); - free_value (b); - return r; -} - -static struct val * -op_cond (struct val *a, struct val *b, struct val *c) -{ - struct val *r; - - if( isstring(a) ) - { - if( strlen(a->u.s) && strcmp(a->u.s, "\"\"") != 0 && strcmp(a->u.s,"0") != 0 ) - { - free_value(a); - free_value(c); - r = b; - } - else - { - free_value(a); - free_value(b); - r = c; - } - } - else - { - (void)to_integer(a); - if( a->u.i ) - { - free_value(a); - free_value(c); - r = b; - } - else - { - free_value(a); - free_value(b); - r = c; - } - } - return r; -} - -static struct val * -op_ne (struct val *a, struct val *b) -{ - struct val *r; - - if (isstring (a) || isstring (b)) { - to_string (a); - to_string (b); - r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) != 0)); - } else { - (void)to_integer(a); - (void)to_integer(b); - r = make_integer ((quad_t)(a->u.i != b->u.i)); - } - - free_value (a); - free_value (b); - return r; -} - -static int -chk_plus (quad_t a, quad_t b, quad_t r) -{ - /* sum of two positive numbers must be positive */ - if (a > 0 && b > 0 && r <= 0) - return 1; - /* sum of two negative numbers must be negative */ - if (a < 0 && b < 0 && r >= 0) - return 1; - /* all other cases are OK */ - return 0; -} - -static struct val * -op_plus (struct val *a, struct val *b) -{ - struct val *r; - - if (!to_integer (a)) { - if( !extra_error_message_supplied ) - ast_log(LOG_WARNING,"non-numeric argument\n"); - if (!to_integer (b)) { - free_value(a); - free_value(b); - return make_integer(0); - } else { - free_value(a); - return (b); - } - } else if (!to_integer(b)) { - free_value(b); - return (a); - } - - r = make_integer (/*(quad_t)*/(a->u.i + b->u.i)); - if (chk_plus (a->u.i, b->u.i, r->u.i)) { - ast_log(LOG_WARNING,"overflow\n"); - } - free_value (a); - free_value (b); - return r; -} - -static int -chk_minus (quad_t a, quad_t b, quad_t r) -{ - /* special case subtraction of QUAD_MIN */ - if (b == QUAD_MIN) { - if (a >= 0) - return 1; - else - return 0; - } - /* this is allowed for b != QUAD_MIN */ - return chk_plus (a, -b, r); -} - -static struct val * -op_minus (struct val *a, struct val *b) -{ - struct val *r; - - if (!to_integer (a)) { - if( !extra_error_message_supplied ) - ast_log(LOG_WARNING, "non-numeric argument\n"); - if (!to_integer (b)) { - free_value(a); - free_value(b); - return make_integer(0); - } else { - r = make_integer(0 - b->u.i); - free_value(a); - free_value(b); - return (r); - } - } else if (!to_integer(b)) { - if( !extra_error_message_supplied ) - ast_log(LOG_WARNING, "non-numeric argument\n"); - free_value(b); - return (a); - } - - r = make_integer (/*(quad_t)*/(a->u.i - b->u.i)); - if (chk_minus (a->u.i, b->u.i, r->u.i)) { - ast_log(LOG_WARNING, "overflow\n"); - } - free_value (a); - free_value (b); - return r; -} - -static struct val * -op_negate (struct val *a) -{ - struct val *r; - - if (!to_integer (a) ) { - free_value(a); - if( !extra_error_message_supplied ) - ast_log(LOG_WARNING, "non-numeric argument\n"); - return make_integer(0); - } - - r = make_integer (/*(quad_t)*/(- a->u.i)); - if (chk_minus (0, a->u.i, r->u.i)) { - ast_log(LOG_WARNING, "overflow\n"); - } - free_value (a); - return r; -} - -static struct val * -op_compl (struct val *a) -{ - int v1 = 1; - struct val *r; - - if( !a ) - { - v1 = 0; - } - else - { - switch( a->type ) - { - case AST_EXPR_integer: - if( a->u.i == 0 ) - v1 = 0; - break; - - case AST_EXPR_string: - if( a->u.s == 0 ) - v1 = 0; - else - { - if( a->u.s[0] == 0 ) - v1 = 0; - else if (strlen(a->u.s) == 1 && a->u.s[0] == '0' ) - v1 = 0; - } - break; - - case AST_EXPR_numeric_string: - if( a->u.s == 0 ) - v1 = 0; - else - { - if( a->u.s[0] == 0 ) - v1 = 0; - else if (strlen(a->u.s) == 1 && a->u.s[0] == '0' ) - v1 = 0; - } - break; - } - } - - r = make_integer (!v1); - free_value (a); - return r; -} - -static int -chk_times (quad_t a, quad_t b, quad_t r) -{ - /* special case: first operand is 0, no overflow possible */ - if (a == 0) - return 0; - /* cerify that result of division matches second operand */ - if (r / a != b) - return 1; - return 0; -} - -static struct val * -op_times (struct val *a, struct val *b) -{ - struct val *r; - - if (!to_integer (a) || !to_integer (b)) { - free_value(a); - free_value(b); - if( !extra_error_message_supplied ) - ast_log(LOG_WARNING, "non-numeric argument\n"); - return(make_integer(0)); - } - - r = make_integer (/*(quad_t)*/(a->u.i * b->u.i)); - if (chk_times (a->u.i, b->u.i, r->u.i)) { - ast_log(LOG_WARNING, "overflow\n"); - } - free_value (a); - free_value (b); - return (r); -} - -static int -chk_div (quad_t a, quad_t b) -{ - /* div by zero has been taken care of before */ - /* only QUAD_MIN / -1 causes overflow */ - if (a == QUAD_MIN && b == -1) - return 1; - /* everything else is OK */ - return 0; -} - -static struct val * -op_div (struct val *a, struct val *b) -{ - struct val *r; - - if (!to_integer (a)) { - free_value(a); - free_value(b); - if( !extra_error_message_supplied ) - ast_log(LOG_WARNING, "non-numeric argument\n"); - return make_integer(0); - } else if (!to_integer (b)) { - free_value(a); - free_value(b); - if( !extra_error_message_supplied ) - ast_log(LOG_WARNING, "non-numeric argument\n"); - return make_integer(INT_MAX); - } - - if (b->u.i == 0) { - ast_log(LOG_WARNING, "division by zero\n"); - free_value(a); - free_value(b); - return make_integer(INT_MAX); - } - - r = make_integer (/*(quad_t)*/(a->u.i / b->u.i)); - if (chk_div (a->u.i, b->u.i)) { - ast_log(LOG_WARNING, "overflow\n"); - } - free_value (a); - free_value (b); - return r; -} - -static struct val * -op_rem (struct val *a, struct val *b) -{ - struct val *r; - - if (!to_integer (a) || !to_integer (b)) { - if( !extra_error_message_supplied ) - ast_log(LOG_WARNING, "non-numeric argument\n"); - free_value(a); - free_value(b); - return make_integer(0); - } - - if (b->u.i == 0) { - ast_log(LOG_WARNING, "div by zero\n"); - free_value(a); - return(b); - } - - r = make_integer (/*(quad_t)*/(a->u.i % b->u.i)); - /* chk_rem necessary ??? */ - free_value (a); - free_value (b); - return r; -} - - -static struct val * -op_colon (struct val *a, struct val *b) -{ - regex_t rp; - regmatch_t rm[2]; - char errbuf[256]; - int eval; - struct val *v; - - /* coerce to both arguments to strings */ - to_string(a); - to_string(b); - /* strip double quotes from both -- they'll screw up the pattern, and the search string starting at ^ */ - strip_quotes(a); - strip_quotes(b); - /* compile regular expression */ - if ((eval = regcomp (&rp, b->u.s, REG_EXTENDED)) != 0) { - regerror (eval, &rp, errbuf, sizeof(errbuf)); - ast_log(LOG_WARNING,"regcomp() error : %s",errbuf); - free_value(a); - free_value(b); - return make_str(""); - } - - /* compare string against pattern */ - /* remember that patterns are anchored to the beginning of the line */ - if (regexec(&rp, a->u.s, (size_t)2, rm, 0) == 0 && rm[0].rm_so == 0) { - if (rm[1].rm_so >= 0) { - *(a->u.s + rm[1].rm_eo) = '\0'; - v = make_str (a->u.s + rm[1].rm_so); - - } else { - v = make_integer ((quad_t)(rm[0].rm_eo - rm[0].rm_so)); - } - } else { - if (rp.re_nsub == 0) { - v = make_integer ((quad_t)0); - } else { - v = make_str (""); - } - } - - /* free arguments and pattern buffer */ - free_value (a); - free_value (b); - regfree (&rp); - - return v; -} - - -static struct val * -op_eqtilde (struct val *a, struct val *b) -{ - regex_t rp; - regmatch_t rm[2]; - char errbuf[256]; - int eval; - struct val *v; - - /* coerce to both arguments to strings */ - to_string(a); - to_string(b); - /* strip double quotes from both -- they'll screw up the pattern, and the search string starting at ^ */ - strip_quotes(a); - strip_quotes(b); - /* compile regular expression */ - if ((eval = regcomp (&rp, b->u.s, REG_EXTENDED)) != 0) { - regerror (eval, &rp, errbuf, sizeof(errbuf)); - ast_log(LOG_WARNING,"regcomp() error : %s",errbuf); - free_value(a); - free_value(b); - return make_str(""); - } - - /* compare string against pattern */ - /* remember that patterns are anchored to the beginning of the line */ - if (regexec(&rp, a->u.s, (size_t)2, rm, 0) == 0 ) { - if (rm[1].rm_so >= 0) { - *(a->u.s + rm[1].rm_eo) = '\0'; - v = make_str (a->u.s + rm[1].rm_so); - - } else { - v = make_integer ((quad_t)(rm[0].rm_eo - rm[0].rm_so)); - } - } else { - if (rp.re_nsub == 0) { - v = make_integer ((quad_t)0); - } else { - v = make_str (""); - } - } - - /* free arguments and pattern buffer */ - free_value (a); - free_value (b); - regfree (&rp); - - return v; -} -- cgit v1.2.3