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-rw-r--r--1.4.23-rc4/main/ast_expr2.y1045
1 files changed, 0 insertions, 1045 deletions
diff --git a/1.4.23-rc4/main/ast_expr2.y b/1.4.23-rc4/main/ast_expr2.y
deleted file mode 100644
index b2faf374d..000000000
--- a/1.4.23-rc4/main/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@digium.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"
-
-#if !defined(STANDALONE_AEL)
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
-#endif
-
-#include <sys/types.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <locale.h>
-#include <unistd.h>
-#include <ctype.h>
-#if !defined(SOLARIS) && !defined(__CYGWIN__)
-/* #include <err.h> */
-#else
-#define quad_t int64_t
-#endif
-#include <errno.h>
-#include <regex.h>
-#include <limits.h>
-
-#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 <val> TOK_COND TOK_COLONCOLON
-%left <val> TOK_OR
-%left <val> TOK_AND
-%left <val> TOK_EQ TOK_GT TOK_LT TOK_GE TOK_LE TOK_NE
-%left <val> TOK_PLUS TOK_MINUS
-%left <val> TOK_MULT TOK_DIV TOK_MOD
-%right <val> TOK_COMPL
-%left <val> TOK_COLON TOK_EQTILDE
-%left <val> TOK_RP TOK_LP
-
-
-%token <val> TOKEN
-%type <val> 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;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 14:28:06 +0000