Mercurial > hg > early-roguelike
view rogue4/xstr.c @ 229:50b89f165a34
Use uniform return types for functions related to options.
Functions for printing options now return void. Functions for setting
options now return int. Argument types still vary, though converting
all the option pointers to void* would be possible.
author | John "Elwin" Edwards |
---|---|
date | Sun, 06 Mar 2016 14:45:18 -0500 |
parents | 9535a08ddc39 |
children |
line wrap: on
line source
/* * * Rogue: Exploring the Dungeons of Doom * Copyright (C) 1980, 1981, 1982 Michael Toy, Ken Arnold and Glenn Wichman * All rights reserved. * * See the file LICENSE.TXT for full copyright and licensing information. */ static char *sccsid = "@(#)xstr.c 4.1 (Berkeley) 10/1/80"; #include <stdio.h> #include <ctype.h> #include <sys/types.h> #include <signal.h> /* * xstr - extract and hash strings in a C program * * Bill Joy UCB * November, 1978 */ #define ignore(a) (a) char *calloc(); off_t tellpt; off_t hashit(); char *mktemp(); void onintr(int); char *savestr(); char *strcat(); char *strcpy(); off_t yankstr(); off_t mesgpt; char *strings = "strings"; int cflg; int vflg; int readstd; main(argc, argv) int argc; char *argv[]; { argc--, argv++; while (argc > 0 && argv[0][0] == '-') { register char *cp = &(*argv++)[1]; argc--; if (*cp == 0) { readstd++; continue; } do switch (*cp++) { case 'c': cflg++; continue; case 'v': vflg++; continue; default: fprintf(stderr, "usage: xstr [ -v ] [ -c ] [ - ] [ name ... ]\n"); } while (*cp); } if (signal(SIGINT, SIG_IGN) == SIG_DFL) signal(SIGINT, onintr); if (cflg || argc == 0 && !readstd) inithash(); else strings = mktemp(savestr("/tmp/xstrXXXXXX")); while (readstd || argc > 0) { if (freopen("x.c", "w", stdout) == NULL) perror("x.c"), exit(1); if (!readstd && freopen(argv[0], "r", stdin) == NULL) perror(argv[0]), exit(2); process("x.c"); if (readstd == 0) argc--, argv++; else readstd = 0; }; flushsh(); if (cflg == 0) xsdotc(); if (strings[0] == '/') ignore(md_unlink(strings)); exit(0); } process(name) char *name; { char *cp; char linebuf[BUFSIZ]; register int c; register int incomm = 0; printf("extern char\txstr[];\n"); for (;;) { if (fgets(linebuf, sizeof linebuf, stdin) == NULL) { if (ferror(stdin)) { perror(name); exit(3); } 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; printf("(&xstr[%d])", (int) yankstr(&cp)); 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; } } if (ferror(stdout)) perror("x.c"), onintr(-1); } off_t yankstr(cpp) register char **cpp; { register char *cp = *cpp; register int c, ch; char dbuf[BUFSIZ]; register char *dp = dbuf; register char *tp; while (c = *cp++) { switch (c) { case '"': cp++; goto out; case '\\': c = *cp++; if (c == 0) break; if (c == '\n') continue; for (tp = "b\bt\tr\rn\nf\f\\\\\"\""; 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)); } octdigit(c) char c; { return (isdigit(c) && c != '8' && c != '9'); } inithash() { char buf[BUFSIZ]; register FILE *mesgread = fopen(strings, "r"); if (mesgread == NULL) return; for (;;) { mesgpt = tellpt; if (fgetNUL(buf, sizeof buf, mesgread) == 0) break; hashit(buf, 0); } ignore(fclose(mesgread)); } fgetNUL(obuf, rmdr, file) char *obuf; register int rmdr; FILE *file; { register c; register char *buf = obuf; while (--rmdr > 0 && (c = xgetc(file)) != 0 && c != EOF) *buf++ = c; *buf++ = 0; return ((feof(file) || ferror(file)) ? 0 : 1); } xgetc(file) FILE *file; { tellpt++; return (getc(file)); } #define BUCKETS 128 struct hash { off_t hpt; char *hstr; struct hash *hnext; short hnew; } bucket[BUCKETS]; off_t hashit(str, new) char *str; int new; { int i; register 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); } hp = (struct hash *) calloc(1, sizeof (*hp)); hp->hpt = mesgpt; hp->hstr = savestr(str); mesgpt += strlen(hp->hstr) + 1; hp->hnext = hp0->hnext; hp->hnew = new; hp0->hnext = hp; return (hp->hpt); } flushsh() { register int i; register struct hash *hp; register FILE *mesgwrit; register 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 ? "a" : "w"); 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)) perror(strings), exit(4); } } ignore(fclose(mesgwrit)); } found(new, off, str) 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"); } prstr(cp) register char *cp; { register 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); } xsdotc() { register FILE *strf = fopen(strings, "r"); register FILE *xdotcf; if (strf == NULL) perror(strings), exit(5); xdotcf = fopen("xs.c", "w"); if (xdotcf == NULL) perror("xs.c"), exit(6); fprintf(xdotcf, "char\txstr[] = {\n"); for (;;) { register int i, c; for (i = 0; i < 20; i++) { c = getc(strf); if (ferror(strf)) { perror(strings); onintr(-1); } if (feof(strf)) { fprintf(xdotcf, "\n"); goto out; } fprintf(xdotcf, "%d,", c); } fprintf(xdotcf, "\n"); } out: fprintf(xdotcf, "};\n"); ignore(fclose(xdotcf)); ignore(fclose(strf)); } char * savestr(cp) register char *cp; { register char *dp = (char *) calloc(1, strlen(cp) + 1); return (strcpy(dp, cp)); } Ignore(void *a) { a = a; } ignorf(a) void (*a)(); { a = a; } lastchr(cp) register char *cp; { while (cp[0] && cp[1]) cp++; return (*cp); } istail(str, of) register char *str, *of; { register int d = strlen(of) - strlen(str); if (d < 0 || strcmp(&of[d], str) != 0) return (-1); return (d); } void onintr(int sig) { ignorf(signal(SIGINT, SIG_IGN)); if (strings[0] == '/') ignore(md_unlink(strings)); ignore(md_unlink("x.c")); ignore(md_unlink("xs.c")); exit(7); }