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b2/: add regular expression conversion debugging (option -R)
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parent
12b21f032c
commit
da1010f92a
15
b2/boom.c
15
b2/boom.c
@ -75,6 +75,15 @@ static void do_substitutions(void)
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}
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static void parse_re(const char *re)
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{
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char *res;
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subst_match(NULL, re, &res);
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printf("%s\n", res);
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}
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static void dump_hierarchy(struct action act)
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{
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fields_dump(stderr, act.fields);
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@ -124,6 +133,7 @@ static void usage(const char *name)
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" -N name for the next file, override the name in diagnostics\n"
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" -q var=value ... run substitutions with the specified inputs\n"
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" -Q var=value ... run substitutions and then do parametric search\n"
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" -R regex parse and print regular expression\n"
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, name);
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exit(1);
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}
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@ -178,6 +188,11 @@ int main(int argc, char **argv)
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process = add_var;
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query = 1;
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select_parts = 1;
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} else if (!strcmp(argv[i], "-R")) {
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i++;
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if (!argv[i])
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usage(*argv);
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parse_re(argv[i]);
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} else
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usage(*argv);
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}
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@ -619,7 +619,7 @@ block:
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if ($4) {
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if ($2 != rel_eq)
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yyerror("only = allow for matching");
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$$ = subst_match($1, $3);
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$$ = subst_match($1, $3, NULL);
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$$->u.match.block = $4;
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} else {
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$$ = subst_assign($1, $2, $3);
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@ -113,7 +113,7 @@ static char *prepare_re(const char *re, char *units)
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}
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struct subst *subst_match(const char *src, const char *re)
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struct subst *subst_match(const char *src, const char *re, char **res)
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{
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char error[1000];
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struct subst *sub;
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@ -124,6 +124,9 @@ struct subst *subst_match(const char *src, const char *re)
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sub->u.match.src = src;
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tmp = prepare_re(re, sub->u.match.units);
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err = regcomp(&sub->u.match.re, tmp, REG_EXTENDED);
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if (res)
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*res = tmp;
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else
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free(tmp);
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if (err) {
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regerror(err, &sub->u.match.re, error, sizeof(error));
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@ -76,7 +76,7 @@ struct subst {
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extern const char *fn;
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struct subst *subst_match(const char *src, const char *re);
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struct subst *subst_match(const char *src, const char *re, char **res);
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struct subst *subst_assign(const char *dst, enum relop op, const char *pat);
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struct subst *subst_end(void);
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struct subst *subst_ignore(void);
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