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-rw-r--r--nx-X11/extras/regex/main.c510
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&REG_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&REG_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&REG_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)&REG_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&REG_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));
+}