/* * Copyright (c) 1980 Regents of the University of California. * All rights reserved. The Berkeley software License Agreement * specifies the terms and conditions for redistribution. */ #ifndef lint char copyright[] = "@(#) Copyright (c) 1980 Regents of the University of California.\n\ All rights reserved.\n"; #endif not lint #ifndef lint static char sccsid[] = "@(#)mkstr.c 5.1 (Berkeley) 5/31/85"; #endif not lint #include #include #define ungetchar(c) ungetc(c, stdin) long ftell(); char *calloc(); /* * mkstr - create a string error message file by massaging C source * * Bill Joy UCB August 1977 * * Modified March 1978 to hash old messages to be able to recompile * without addding messages to the message file (usually) * * Based on an earlier program conceived by Bill Joy and Chuck Haley * * Program to create a string error message file * from a group of C programs. Arguments are the name * of the file where the strings are to be placed, the * prefix of the new files where the processed source text * is to be placed, and the files to be processed. * * The program looks for 'error("' in the source stream. * Whenever it finds this, the following characters from the '"' * to a '"' are replaced by 'seekpt' where seekpt is a * pointer into the error message file. * If the '(' is not immediately followed by a '"' no change occurs. * * The optional '-' causes strings to be added at the end of the * existing error message file for recompilation of single routines. */ FILE *mesgread, *mesgwrite; char *progname; char usagestr[] = "usage: %s [ - ] mesgfile prefix file ...\n"; char name[100], *np; main(argc, argv) int argc; char *argv[]; { char addon = 0; argc--, progname = *argv++; if (argc > 1 && argv[0][0] == '-') addon++, argc--, argv++; if (argc < 3) fprintf(stderr, usagestr, progname), exit(1); mesgwrite = fopen(argv[0], addon ? "a" : "w"); if (mesgwrite == NULL) perror(argv[0]), exit(1); mesgread = fopen(argv[0], "r"); if (mesgread == NULL) perror(argv[0]), exit(1); inithash(); argc--, argv++; strcpy(name, argv[0]); np = name + strlen(name); argc--, argv++; do { strcpy(np, argv[0]); if (freopen(name, "w", stdout) == NULL) perror(name), exit(1); if (freopen(argv[0], "r", stdin) == NULL) perror(argv[0]), exit(1); process(); argc--, argv++; } while (argc > 0); exit(0); } process() { register char *cp; register c; for (;;) { c = getchar(); if (c == EOF) return; if (c != 'e') { putchar(c); continue; } if (match("error(")) { printf("error("); c = getchar(); if (c != '"') putchar(c); else copystr(); } } } match(ocp) char *ocp; { register char *cp; register c; for (cp = ocp + 1; *cp; cp++) { c = getchar(); if (c != *cp) { while (ocp < cp) putchar(*ocp++); ungetchar(c); return (0); } } return (1); } copystr() { register c, ch; char buf[512]; register char *cp = buf; for (;;) { c = getchar(); if (c == EOF) break; switch (c) { case '"': *cp++ = 0; goto out; case '\\': c = getchar(); switch (c) { case 'b': c = '\b'; break; case 't': c = '\t'; break; case 'r': c = '\r'; break; case 'n': c = '\n'; break; case '\n': continue; case 'f': c = '\f'; break; case '\\': break; default: if (!octdigit(c)) break; c -= '0'; ch = getchar(); if (!octdigit(ch)) break; c <<= 3, c += ch - '0'; ch = getchar(); if (!octdigit(ch)) break; c <<= 3, c += ch - '0'; break; } } *cp++ = c; } out: *cp = 0; printf("%d", hashit(buf, 1, NULL)); } octdigit(c) char c; { return (c >= '0' && c <= '7'); } inithash() { char buf[512]; int mesgpt = 0; rewind(mesgread); while (fgetNUL(buf, sizeof buf, mesgread) != NULL) { hashit(buf, 0, mesgpt); mesgpt += strlen(buf) + 2; } } #define NBUCKETS 511 struct hash { long hval; unsigned hpt; struct hash *hnext; } *bucket[NBUCKETS]; hashit(str, really, fakept) char *str; char really; unsigned fakept; { int i; register struct hash *hp; char buf[512]; long hashval = 0; register char *cp; if (really) fflush(mesgwrite); for (cp = str; *cp;) hashval = (hashval << 1) + *cp++; i = hashval % NBUCKETS; if (i < 0) i += NBUCKETS; if (really != 0) for (hp = bucket[i]; hp != 0; hp = hp->hnext) if (hp->hval == hashval) { fseek(mesgread, (long) hp->hpt, 0); fgetNUL(buf, sizeof buf, mesgread); /* fprintf(stderr, "Got (from %d) %s\n", hp->hpt, buf); */ if (strcmp(buf, str) == 0) break; } if (!really || hp == 0) { hp = (struct hash *) calloc(1, sizeof *hp); hp->hnext = bucket[i]; hp->hval = hashval; hp->hpt = really ? ftell(mesgwrite) : fakept; if (really) { fwrite(str, sizeof (char), strlen(str) + 1, mesgwrite); fwrite("\n", sizeof (char), 1, mesgwrite); } bucket[i] = hp; } /* fprintf(stderr, "%s hashed to %ld at %d\n", str, hp->hval, hp->hpt); */ return (hp->hpt); } #include #include fgetNUL(obuf, rmdr, file) char *obuf; register int rmdr; FILE *file; { register c; register char *buf = obuf; while (--rmdr > 0 && (c = getc(file)) != 0 && c != EOF) *buf++ = c; *buf++ = 0; getc(file); return ((feof(file) || ferror(file)) ? NULL : 1); }