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-rw-r--r--usr.bin/xstr/xstr.c491
1 files changed, 491 insertions, 0 deletions
diff --git a/usr.bin/xstr/xstr.c b/usr.bin/xstr/xstr.c
new file mode 100644
index 0000000..670e09e
--- /dev/null
+++ b/usr.bin/xstr/xstr.c
@@ -0,0 +1,491 @@
+/*
+ * Copyright (c) 1980, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+__FBSDID("$FreeBSD$");
+
+#ifndef lint
+static const char copyright[] =
+"@(#) Copyright (c) 1980, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif
+
+#ifndef lint
+static const char sccsid[] = "@(#)xstr.c 8.1 (Berkeley) 6/9/93";
+#endif
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pathnames.h"
+
+/*
+ * xstr - extract and hash strings in a C program
+ *
+ * Bill Joy UCB
+ * November, 1978
+ */
+
+#define ignore(a) ((void) a)
+
+static off_t tellpt;
+
+static off_t mesgpt;
+static char cstrings[] = "strings";
+static char *strings = cstrings;
+
+static int cflg;
+static int vflg;
+static int readstd;
+
+static char lastchr(char *);
+
+static int fgetNUL(char *, int, FILE *);
+static int istail(char *, char *);
+static int octdigit(char);
+static int xgetc(FILE *);
+
+static off_t hashit(char *, int);
+static off_t yankstr(char **);
+
+static void usage(void);
+
+static void flushsh(void);
+static void found(int, off_t, char *);
+static void inithash(void);
+static void onintr(int);
+static void process(const char *);
+static void prstr(char *);
+static void xsdotc(void);
+
+int
+main(int argc, char *argv[])
+{
+ int c;
+ int fdesc;
+
+ while ((c = getopt(argc, argv, "-cv")) != -1)
+ switch (c) {
+ case '-':
+ readstd++;
+ break;
+ case 'c':
+ cflg++;
+ break;
+ case 'v':
+ vflg++;
+ break;
+ default:
+ usage();
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (signal(SIGINT, SIG_IGN) == SIG_DFL)
+ signal(SIGINT, onintr);
+ if (cflg || (argc == 0 && !readstd))
+ inithash();
+ else {
+ strings = strdup(_PATH_TMP);
+ if (strings == NULL)
+ err(1, "strdup() failed");
+ fdesc = mkstemp(strings);
+ if (fdesc == -1)
+ err(1, "Unable to create temporary file");
+ close(fdesc);
+ }
+
+ while (readstd || argc > 0) {
+ if (freopen("x.c", "w", stdout) == NULL)
+ err(1, "x.c");
+ if (!readstd && freopen(argv[0], "r", stdin) == NULL)
+ err(2, "%s", argv[0]);
+ process("x.c");
+ if (readstd == 0)
+ argc--, argv++;
+ else
+ readstd = 0;
+ };
+ flushsh();
+ if (cflg == 0)
+ xsdotc();
+ if (strings[0] == '/')
+ ignore(unlink(strings));
+ exit(0);
+}
+
+static void
+usage(void)
+{
+ fprintf(stderr, "usage: xstr [-cv] [-] [file ...]\n");
+ exit (1);
+}
+
+static char linebuf[BUFSIZ];
+
+static void
+process(const char *name)
+{
+ char *cp;
+ int c;
+ int incomm = 0;
+ int ret;
+
+ printf("extern char\txstr[];\n");
+ for (;;) {
+ if (fgets(linebuf, sizeof linebuf, stdin) == NULL) {
+ if (ferror(stdin))
+ err(3, "%s", name);
+ break;
+ }
+ if (linebuf[0] == '#') {
+ if (linebuf[1] == ' ' && isdigit(linebuf[2]))
+ printf("#line%s", &linebuf[1]);
+ else
+ printf("%s", linebuf);
+ continue;
+ }
+ for (cp = linebuf; (c = *cp++);) switch (c) {
+
+ case '"':
+ if (incomm)
+ goto def;
+ if ((ret = (int) yankstr(&cp)) == -1)
+ goto out;
+ printf("(&xstr[%d])", ret);
+ break;
+
+ case '\'':
+ if (incomm)
+ goto def;
+ putchar(c);
+ if (*cp)
+ putchar(*cp++);
+ break;
+
+ case '/':
+ if (incomm || *cp != '*')
+ goto def;
+ incomm = 1;
+ cp++;
+ printf("/*");
+ continue;
+
+ case '*':
+ if (incomm && *cp == '/') {
+ incomm = 0;
+ cp++;
+ printf("*/");
+ continue;
+ }
+ goto def;
+
+def:
+ default:
+ putchar(c);
+ break;
+ }
+ }
+out:
+ if (ferror(stdout))
+ warn("x.c"), onintr(0);
+}
+
+static off_t
+yankstr(char **cpp)
+{
+ char *cp = *cpp;
+ int c, ch;
+ char dbuf[BUFSIZ];
+ char *dp = dbuf;
+ char *tp;
+ static char tmp[] = "b\bt\tr\rn\nf\f\\\\\"\"";
+
+ while ((c = *cp++)) {
+ if (dp == dbuf + sizeof(dbuf) - 3)
+ errx(1, "message too long");
+ switch (c) {
+
+ case '"':
+ cp++;
+ goto out;
+
+ case '\\':
+ c = *cp++;
+ if (c == 0)
+ break;
+ if (c == '\n') {
+ if (fgets(linebuf, sizeof linebuf, stdin)
+ == NULL) {
+ if (ferror(stdin))
+ err(3, "x.c");
+ return(-1);
+ }
+ cp = linebuf;
+ continue;
+ }
+ for (tp = tmp; (ch = *tp++); tp++)
+ if (c == ch) {
+ c = *tp;
+ goto gotc;
+ }
+ if (!octdigit(c)) {
+ *dp++ = '\\';
+ break;
+ }
+ c -= '0';
+ if (!octdigit(*cp))
+ break;
+ c <<= 3, c += *cp++ - '0';
+ if (!octdigit(*cp))
+ break;
+ c <<= 3, c += *cp++ - '0';
+ break;
+ }
+gotc:
+ *dp++ = c;
+ }
+out:
+ *cpp = --cp;
+ *dp = 0;
+ return (hashit(dbuf, 1));
+}
+
+static int
+octdigit(char c)
+{
+ return (isdigit(c) && c != '8' && c != '9');
+}
+
+static void
+inithash(void)
+{
+ char buf[BUFSIZ];
+ FILE *mesgread = fopen(strings, "r");
+
+ if (mesgread == NULL)
+ return;
+ for (;;) {
+ mesgpt = tellpt;
+ if (fgetNUL(buf, sizeof buf, mesgread) == 0)
+ break;
+ ignore(hashit(buf, 0));
+ }
+ ignore(fclose(mesgread));
+}
+
+static int
+fgetNUL(char *obuf, int rmdr, FILE *file)
+{
+ int c;
+ char *buf = obuf;
+
+ while (--rmdr > 0 && (c = xgetc(file)) != 0 && c != EOF)
+ *buf++ = c;
+ *buf++ = 0;
+ return ((feof(file) || ferror(file)) ? 0 : 1);
+}
+
+static int
+xgetc(FILE *file)
+{
+
+ tellpt++;
+ return (getc(file));
+}
+
+#define BUCKETS 128
+
+static struct hash {
+ off_t hpt;
+ char *hstr;
+ struct hash *hnext;
+ short hnew;
+} bucket[BUCKETS];
+
+static off_t
+hashit(char *str, int new)
+{
+ int i;
+ struct hash *hp, *hp0;
+
+ hp = hp0 = &bucket[lastchr(str) & 0177];
+ while (hp->hnext) {
+ hp = hp->hnext;
+ i = istail(str, hp->hstr);
+ if (i >= 0)
+ return (hp->hpt + i);
+ }
+ if ((hp = (struct hash *) calloc(1, sizeof (*hp))) == NULL)
+ errx(8, "calloc");
+ hp->hpt = mesgpt;
+ if (!(hp->hstr = strdup(str)))
+ err(1, NULL);
+ mesgpt += strlen(hp->hstr) + 1;
+ hp->hnext = hp0->hnext;
+ hp->hnew = new;
+ hp0->hnext = hp;
+ return (hp->hpt);
+}
+
+static void
+flushsh(void)
+{
+ int i;
+ struct hash *hp;
+ FILE *mesgwrit;
+ int old = 0, new = 0;
+
+ for (i = 0; i < BUCKETS; i++)
+ for (hp = bucket[i].hnext; hp != NULL; hp = hp->hnext)
+ if (hp->hnew)
+ new++;
+ else
+ old++;
+ if (new == 0 && old != 0)
+ return;
+ mesgwrit = fopen(strings, old ? "r+" : "w");
+ if (mesgwrit == NULL)
+ err(4, "%s", strings);
+ for (i = 0; i < BUCKETS; i++)
+ for (hp = bucket[i].hnext; hp != NULL; hp = hp->hnext) {
+ found(hp->hnew, hp->hpt, hp->hstr);
+ if (hp->hnew) {
+ fseek(mesgwrit, hp->hpt, 0);
+ ignore(fwrite(hp->hstr, strlen(hp->hstr) + 1, 1, mesgwrit));
+ if (ferror(mesgwrit))
+ err(4, "%s", strings);
+ }
+ }
+ if (fclose(mesgwrit) == EOF)
+ err(4, "%s", strings);
+}
+
+static void
+found(int new, off_t off, char *str)
+{
+ if (vflg == 0)
+ return;
+ if (!new)
+ fprintf(stderr, "found at %d:", (int) off);
+ else
+ fprintf(stderr, "new at %d:", (int) off);
+ prstr(str);
+ fprintf(stderr, "\n");
+}
+
+static void
+prstr(char *cp)
+{
+ int c;
+
+ while ((c = (*cp++ & 0377)))
+ if (c < ' ')
+ fprintf(stderr, "^%c", c + '`');
+ else if (c == 0177)
+ fprintf(stderr, "^?");
+ else if (c > 0200)
+ fprintf(stderr, "\\%03o", c);
+ else
+ fprintf(stderr, "%c", c);
+}
+
+static void
+xsdotc(void)
+{
+ FILE *strf = fopen(strings, "r");
+ FILE *xdotcf;
+
+ if (strf == NULL)
+ err(5, "%s", strings);
+ xdotcf = fopen("xs.c", "w");
+ if (xdotcf == NULL)
+ err(6, "xs.c");
+ fprintf(xdotcf, "char\txstr[] = {\n");
+ for (;;) {
+ int i, c;
+
+ for (i = 0; i < 8; i++) {
+ c = getc(strf);
+ if (ferror(strf)) {
+ warn("%s", strings);
+ onintr(0);
+ }
+ if (feof(strf)) {
+ fprintf(xdotcf, "\n");
+ goto out;
+ }
+ fprintf(xdotcf, "0x%02x,", c);
+ }
+ fprintf(xdotcf, "\n");
+ }
+out:
+ fprintf(xdotcf, "};\n");
+ ignore(fclose(xdotcf));
+ ignore(fclose(strf));
+}
+
+static char
+lastchr(char *cp)
+{
+
+ while (cp[0] && cp[1])
+ cp++;
+ return (*cp);
+}
+
+static int
+istail(char *str, char *of)
+{
+ int d = strlen(of) - strlen(str);
+
+ if (d < 0 || strcmp(&of[d], str) != 0)
+ return (-1);
+ return (d);
+}
+
+static void
+onintr(int dummy __unused)
+{
+
+ ignore(signal(SIGINT, SIG_IGN));
+ if (strings[0] == '/')
+ ignore(unlink(strings));
+ ignore(unlink("x.c"));
+ ignore(unlink("xs.c"));
+ exit(7);
+}
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