diff options
Diffstat (limited to 'nx-X11/extras/regex/main.c')
| -rw-r--r-- | nx-X11/extras/regex/main.c | 510 |
1 files changed, 510 insertions, 0 deletions
diff --git a/nx-X11/extras/regex/main.c b/nx-X11/extras/regex/main.c new file mode 100644 index 000000000..0221e7713 --- /dev/null +++ b/nx-X11/extras/regex/main.c @@ -0,0 +1,510 @@ +#include <stdio.h> +#include <string.h> +#include <sys/types.h> +#include <regex.h> +#include <assert.h> + +#include "main.ih" + +char *progname; +int debug = 0; +int line = 0; +int status = 0; + +int copts = REG_EXTENDED; +int eopts = 0; +regoff_t startoff = 0; +regoff_t endoff = 0; + + +extern int split(); +extern void regprint(); + +/* + - main - do the simple case, hand off to regress() for regression + */ +main(argc, argv) +int argc; +char *argv[]; +{ + regex_t re; +# define NS 10 + regmatch_t subs[NS]; + char erbuf[100]; + int err; + size_t len; + int c; + int errflg = 0; + register int i; + extern int optind; + extern char *optarg; + + progname = argv[0]; + + while ((c = getopt(argc, argv, "c:e:S:E:x")) != EOF) + switch (c) { + case 'c': /* compile options */ + copts = options('c', optarg); + break; + case 'e': /* execute options */ + eopts = options('e', optarg); + break; + case 'S': /* start offset */ + startoff = (regoff_t)atoi(optarg); + break; + case 'E': /* end offset */ + endoff = (regoff_t)atoi(optarg); + break; + case 'x': /* Debugging. */ + debug++; + break; + case '?': + default: + errflg++; + break; + } + if (errflg) { + fprintf(stderr, "usage: %s ", progname); + fprintf(stderr, "[-c copt][-C][-d] [re]\n"); + exit(2); + } + + if (optind >= argc) { + regress(stdin); + exit(status); + } + + err = regcomp(&re, argv[optind++], copts); + if (err) { + len = regerror(err, &re, erbuf, sizeof(erbuf)); + fprintf(stderr, "error %s, %d/%d `%s'\n", + eprint(err), len, sizeof(erbuf), erbuf); + exit(status); + } + regprint(&re, stdout); + + if (optind >= argc) { + regfree(&re); + exit(status); + } + + if (eopts®_STARTEND) { + subs[0].rm_so = startoff; + subs[0].rm_eo = strlen(argv[optind]) - endoff; + } + err = regexec(&re, argv[optind], (size_t)NS, subs, eopts); + if (err) { + len = regerror(err, &re, erbuf, sizeof(erbuf)); + fprintf(stderr, "error %s, %d/%d `%s'\n", + eprint(err), len, sizeof(erbuf), erbuf); + exit(status); + } + if (!(copts®_NOSUB)) { + len = (int)(subs[0].rm_eo - subs[0].rm_so); + if (subs[0].rm_so != -1) { + if (len != 0) + printf("match `%.*s'\n", len, + argv[optind] + subs[0].rm_so); + else + printf("match `'@%.1s\n", + argv[optind] + subs[0].rm_so); + } + for (i = 1; i < NS; i++) + if (subs[i].rm_so != -1) + printf("(%d) `%.*s'\n", i, + (int)(subs[i].rm_eo - subs[i].rm_so), + argv[optind] + subs[i].rm_so); + } + exit(status); +} + +/* + - regress - main loop of regression test + == void regress(FILE *in); + */ +void +regress(in) +FILE *in; +{ + char inbuf[1000]; +# define MAXF 10 + char *f[MAXF]; + int nf; + int i; + char erbuf[100]; + size_t ne; + char *badpat = "invalid regular expression"; +# define SHORT 10 + char *bpname = "REG_BADPAT"; + regex_t re; + + while (fgets(inbuf, sizeof(inbuf), in) != NULL) { + line++; + if (inbuf[0] == '#' || inbuf[0] == '\n') + continue; /* NOTE CONTINUE */ + inbuf[strlen(inbuf)-1] = '\0'; /* get rid of stupid \n */ + if (debug) + fprintf(stdout, "%d:\n", line); + nf = split(inbuf, f, MAXF, "\t\t"); + if (nf < 3) { + fprintf(stderr, "bad input, line %d\n", line); + exit(1); + } + for (i = 0; i < nf; i++) + if (strcmp(f[i], "\"\"") == 0) + f[i] = ""; + if (nf <= 3) + f[3] = NULL; + if (nf <= 4) + f[4] = NULL; + try(f[0], f[1], f[2], f[3], f[4], options('c', f[1])); + if (opt('&', f[1])) /* try with either type of RE */ + try(f[0], f[1], f[2], f[3], f[4], + options('c', f[1]) &~ REG_EXTENDED); + } + + ne = regerror(REG_BADPAT, (regex_t *)NULL, erbuf, sizeof(erbuf)); + if (strcmp(erbuf, badpat) != 0 || ne != strlen(badpat)+1) { + fprintf(stderr, "end: regerror() test gave `%s' not `%s'\n", + erbuf, badpat); + status = 1; + } + ne = regerror(REG_BADPAT, (regex_t *)NULL, erbuf, (size_t)SHORT); + if (strncmp(erbuf, badpat, SHORT-1) != 0 || erbuf[SHORT-1] != '\0' || + ne != strlen(badpat)+1) { + fprintf(stderr, "end: regerror() short test gave `%s' not `%.*s'\n", + erbuf, SHORT-1, badpat); + status = 1; + } + ne = regerror(REG_ITOA|REG_BADPAT, (regex_t *)NULL, erbuf, sizeof(erbuf)); + if (strcmp(erbuf, bpname) != 0 || ne != strlen(bpname)+1) { + fprintf(stderr, "end: regerror() ITOA test gave `%s' not `%s'\n", + erbuf, bpname); + status = 1; + } + re.re_endp = bpname; + ne = regerror(REG_ATOI, &re, erbuf, sizeof(erbuf)); + if (atoi(erbuf) != (int)REG_BADPAT) { + fprintf(stderr, "end: regerror() ATOI test gave `%s' not `%ld'\n", + erbuf, (long)REG_BADPAT); + status = 1; + } else if (ne != strlen(erbuf)+1) { + fprintf(stderr, "end: regerror() ATOI test len(`%s') = %ld\n", + erbuf, (long)REG_BADPAT); + status = 1; + } +} + +/* + - try - try it, and report on problems + == void try(char *f0, char *f1, char *f2, char *f3, char *f4, int opts); + */ +void +try(f0, f1, f2, f3, f4, opts) +char *f0; +char *f1; +char *f2; +char *f3; +char *f4; +int opts; /* may not match f1 */ +{ + regex_t re; +# define NSUBS 10 + regmatch_t subs[NSUBS]; +# define NSHOULD 15 + char *should[NSHOULD]; + int nshould; + char erbuf[100]; + int err; + int len; + char *type = (opts & REG_EXTENDED) ? "ERE" : "BRE"; + register int i; + char *grump; + char f0copy[1000]; + char f2copy[1000]; + + strcpy(f0copy, f0); + re.re_endp = (opts®_PEND) ? f0copy + strlen(f0copy) : NULL; + fixstr(f0copy); + err = regcomp(&re, f0copy, opts); + if (err != 0 && (!opt('C', f1) || err != efind(f2))) { + /* unexpected error or wrong error */ + len = regerror(err, &re, erbuf, sizeof(erbuf)); + fprintf(stderr, "%d: %s error %s, %d/%d `%s'\n", + line, type, eprint(err), len, + sizeof(erbuf), erbuf); + status = 1; + } else if (err == 0 && opt('C', f1)) { + /* unexpected success */ + fprintf(stderr, "%d: %s should have given REG_%s\n", + line, type, f2); + status = 1; + err = 1; /* so we won't try regexec */ + } + + if (err != 0) { + regfree(&re); + return; + } + + strcpy(f2copy, f2); + fixstr(f2copy); + + if (options('e', f1)®_STARTEND) { + if (strchr(f2, '(') == NULL || strchr(f2, ')') == NULL) + fprintf(stderr, "%d: bad STARTEND syntax\n", line); + subs[0].rm_so = strchr(f2, '(') - f2 + 1; + subs[0].rm_eo = strchr(f2, ')') - f2; + } + err = regexec(&re, f2copy, NSUBS, subs, options('e', f1)); + + if (err != 0 && (f3 != NULL || err != REG_NOMATCH)) { + /* unexpected error or wrong error */ + len = regerror(err, &re, erbuf, sizeof(erbuf)); + fprintf(stderr, "%d: %s exec error %s, %d/%d `%s'\n", + line, type, eprint(err), len, + sizeof(erbuf), erbuf); + status = 1; + } else if (err != 0) { + /* nothing more to check */ + } else if (f3 == NULL) { + /* unexpected success */ + fprintf(stderr, "%d: %s exec should have failed\n", + line, type); + status = 1; + err = 1; /* just on principle */ + } else if (opts®_NOSUB) { + /* nothing more to check */ + } else if ((grump = check(f2, subs[0], f3)) != NULL) { + fprintf(stderr, "%d: %s %s\n", line, type, grump); + status = 1; + err = 1; + } + + if (err != 0 || f4 == NULL) { + regfree(&re); + return; + } + + for (i = 1; i < NSHOULD; i++) + should[i] = NULL; + nshould = split(f4, should+1, NSHOULD-1, ","); + if (nshould == 0) { + nshould = 1; + should[1] = ""; + } + for (i = 1; i < NSUBS; i++) { + grump = check(f2, subs[i], should[i]); + if (grump != NULL) { + fprintf(stderr, "%d: %s $%d %s\n", line, + type, i, grump); + status = 1; + err = 1; + } + } + + regfree(&re); +} + +/* + - options - pick options out of a regression-test string + == int options(int type, char *s); + */ +int +options(type, s) +int type; /* 'c' compile, 'e' exec */ +char *s; +{ + register char *p; + register int o = (type == 'c') ? copts : eopts; + register char *legal = (type == 'c') ? "bisnmp" : "^$#tl"; + + for (p = s; *p != '\0'; p++) + if (strchr(legal, *p) != NULL) + switch (*p) { + case 'b': + o &= ~REG_EXTENDED; + break; + case 'i': + o |= REG_ICASE; + break; + case 's': + o |= REG_NOSUB; + break; + case 'n': + o |= REG_NEWLINE; + break; + case 'm': + o &= ~REG_EXTENDED; + o |= REG_NOSPEC; + break; + case 'p': + o |= REG_PEND; + break; + case '^': + o |= REG_NOTBOL; + break; + case '$': + o |= REG_NOTEOL; + break; + case '#': + o |= REG_STARTEND; + break; + case 't': /* trace */ + o |= REG_TRACE; + break; + case 'l': /* force long representation */ + o |= REG_LARGE; + break; + case 'r': /* force backref use */ + o |= REG_BACKR; + break; + } + return(o); +} + +/* + - opt - is a particular option in a regression string? + == int opt(int c, char *s); + */ +int /* predicate */ +opt(c, s) +int c; +char *s; +{ + return(strchr(s, c) != NULL); +} + +/* + - fixstr - transform magic characters in strings + == void fixstr(register char *p); + */ +void +fixstr(p) +register char *p; +{ + if (p == NULL) + return; + + for (; *p != '\0'; p++) + if (*p == 'N') + *p = '\n'; + else if (*p == 'T') + *p = '\t'; + else if (*p == 'S') + *p = ' '; + else if (*p == 'Z') + *p = '\0'; +} + +/* + - check - check a substring match + == char *check(char *str, regmatch_t sub, char *should); + */ +char * /* NULL or complaint */ +check(str, sub, should) +char *str; +regmatch_t sub; +char *should; +{ + register int len; + register int shlen; + register char *p; + static char grump[500]; + register char *at = NULL; + + if (should != NULL && strcmp(should, "-") == 0) + should = NULL; + if (should != NULL && should[0] == '@') { + at = should + 1; + should = ""; + } + + /* check rm_so and rm_eo for consistency */ + if (sub.rm_so > sub.rm_eo || (sub.rm_so == -1 && sub.rm_eo != -1) || + (sub.rm_so != -1 && sub.rm_eo == -1) || + (sub.rm_so != -1 && sub.rm_so < 0) || + (sub.rm_eo != -1 && sub.rm_eo < 0) ) { + sprintf(grump, "start %ld end %ld", (long)sub.rm_so, + (long)sub.rm_eo); + return(grump); + } + + /* check for no match */ + if (sub.rm_so == -1 && should == NULL) + return(NULL); + if (sub.rm_so == -1) + return("did not match"); + + /* check for in range */ + if (sub.rm_eo > strlen(str)) { + sprintf(grump, "start %ld end %ld, past end of string", + (long)sub.rm_so, (long)sub.rm_eo); + return(grump); + } + + len = (int)(sub.rm_eo - sub.rm_so); + shlen = (int)strlen(should); + p = str + sub.rm_so; + + /* check for not supposed to match */ + if (should == NULL) { + sprintf(grump, "matched `%.*s'", len, p); + return(grump); + } + + /* check for wrong match */ + if (len != shlen || strncmp(p, should, (size_t)shlen) != 0) { + sprintf(grump, "matched `%.*s' instead", len, p); + return(grump); + } + if (shlen > 0) + return(NULL); + + /* check null match in right place */ + if (at == NULL) + return(NULL); + shlen = strlen(at); + if (shlen == 0) + shlen = 1; /* force check for end-of-string */ + if (strncmp(p, at, shlen) != 0) { + sprintf(grump, "matched null at `%.20s'", p); + return(grump); + } + return(NULL); +} + +/* + - eprint - convert error number to name + == static char *eprint(int err); + */ +static char * +eprint(err) +int err; +{ + static char epbuf[100]; + size_t len; + + len = regerror(REG_ITOA|err, (regex_t *)NULL, epbuf, sizeof(epbuf)); + assert(len <= sizeof(epbuf)); + return(epbuf); +} + +/* + - efind - convert error name to number + == static int efind(char *name); + */ +static int +efind(name) +char *name; +{ + static char efbuf[100]; + size_t n; + regex_t re; + + sprintf(efbuf, "REG_%s", name); + assert(strlen(efbuf) < sizeof(efbuf)); + re.re_endp = efbuf; + (void) regerror(REG_ATOI, &re, efbuf, sizeof(efbuf)); + return(atoi(efbuf)); +} |