int
reexec(regex_t* re, char* s, size_t n, size_t nmatch, regmatch_t* match, int flags)
{
int code;
if((code = regnexec(re, s, n, nmatch, match, flags)) && code != REG_NOMATCH)
reerror(re, code);
return code;
}
/*
* Implementation
*/
static re_cod *
LispRecomp(LispBuiltin *builtin, char *pattern, int cflags)
{
int code;
re_cod *regex = LispMalloc(sizeof(re_cod));
if ((code = recomp(regex, pattern, cflags)) != 0) {
char buffer[256];
reerror(code, regex, buffer, sizeof(buffer));
refree(regex);
LispFree(regex);
LispDestroy("%s: recomp(\"%s\"): %s", STRFUN(builtin), pattern, buffer);
}
return (regex);
}
int
substitute(regex_t *re, Text *data)
{
word n;
int c;
regmatch_t matches[100];
if(reexec(re, (char*)data->s, data->w - data->s, elementsof(matches), matches, 0))
return 0;
if(c = regsubexec(re, (char*)data->s, elementsof(matches), matches)) {
reerror(re, c);
return 0;
}
n = re->re_sub->re_len;
assure(data, n+1);
memcpy(data->s, re->re_sub->re_buf, n+1);
data->w = data->s + n;
return 1;
}
int
main(int argc, char *argv[])
{
re_cod cod;
re_mat mat[10];
int line, ecode, i, len, group, failed;
long eo, so;
char buf[8192];
char str[8192];
FILE *fp = fopen("tests.txt", "r");
if (fp == NULL) {
fprintf(stderr, "failed to open tests.txt\n");
exit(1);
}
ecode = line = group = failed = 0;
cod.cod = NULL;
while (fgets(buf, sizeof(buf), fp)) {
++line;
if (buf[0] == '#' || buf[0] == '\n')
continue;
else if (buf[0] == '/') {
char *ptr = strrchr(buf, '/');
if (ptr == buf) {
fprintf(stderr, "syntax error at line %d\n", line);
break;
}
else {
int flags = 0;
refree(&cod);
for (*ptr++ = '\0'; *ptr; ptr++) {
if (*ptr == 'i')
flags |= RE_ICASE;
else if (*ptr == 'n')
flags |= RE_NEWLINE;
}
ecode = recomp(&cod, buf + 1, flags);
failed = ecode;
}
}
else if (buf[0] == '>') {
if (cod.cod == NULL) {
fprintf(stderr, "no previous pattern at line %d\n", line);
break;
}
len = strlen(buf) - 1;
buf[len] = '\0';
strcpy(str, buf + 1);
for (i = 0, --len; i < len - 1; i++) {
if (str[i] == '\\') {
memmove(str + i, str + i + 1, len);
--len;
switch (str[i]) {
case 'a':
str[i] = '\a';
break;
case 'b':
str[i] = '\b';
break;
case 'f':
str[i] = '\f';
break;
case 'n':
str[i] = '\n';
break;
case 'r':
str[i] = '\r';
break;
case 't':
str[i] = '\t';
break;
case 'v':
str[i] = '\v';
break;
default:
break;
}
}
}
group = 0;
ecode = reexec(&cod, str, 10, &mat[0], 0);
if (ecode && ecode != RE_NOMATCH) {
reerror(failed, &cod, buf, sizeof(buf));
fprintf(stderr, "%s, at line %d\n", buf, line);
break;
}
}
else if (buf[0] == ':') {
if (failed) {
len = strlen(buf) - 1;
buf[len] = '\0';
if (failed == RE_EESCAPE && strcmp(buf, ":EESCAPE") == 0)
continue;
if (failed == RE_ESUBREG && strcmp(buf, ":ESUBREG") == 0)
continue;
if (failed == RE_EBRACK && strcmp(buf, ":EBRACK") == 0)
continue;
if (failed == RE_EPAREN && strcmp(buf, ":EPAREN") == 0)
continue;
if (failed == RE_EBRACE && strcmp(buf, ":EBRACE") == 0)
continue;
if (failed == RE_EBADBR && strcmp(buf, ":EBADBR") == 0)
continue;
if (failed == RE_ERANGE && strcmp(buf, ":ERANGE") == 0)
continue;
if (failed == RE_ESPACE && strcmp(buf, ":ESPACE") == 0)
continue;
if (failed == RE_BADRPT && strcmp(buf, ":BADRPT") == 0)
continue;
if (failed == RE_EMPTY && strcmp(buf, ":EMPTY") == 0)
continue;
reerror(failed, &cod, buf, sizeof(buf));
fprintf(stderr, "Error value %d doesn't match: %s, at line %d\n",
failed, buf, line);
break;
}
else if (!ecode) {
fprintf(stderr, "found match when shoudn't, at line %d\n", line);
break;
}
}
else {
if (failed) {
reerror(failed, &cod, buf, sizeof(buf));
fprintf(stderr, "%s, at line %d\n", buf, line);
break;
}
if (sscanf(buf, "%ld,%ld:", &so, &eo) != 2) {
fprintf(stderr, "expecting match offsets at line %d\n", line);
break;
}
else if (ecode) {
fprintf(stderr, "didn't match, at line %d\n", line);
break;
}
else if (group >= 10) {
fprintf(stderr, "syntax error at line %d (too many groups)\n",
line);
break;
}
else if (so != mat[group].rm_so || eo != mat[group].rm_eo) {
fprintf(stderr, "match failed at line %d, got %ld,%ld: ",
line, mat[group].rm_so, mat[group].rm_eo);
if (mat[group].rm_so < mat[group].rm_eo)
fwrite(str + mat[group].rm_so,
mat[group].rm_eo - mat[group].rm_so, 1, stderr);
fputc('\n', stderr);
break;
}
++group;
}
}
fclose(fp);
return (ecode);
}
