/* $OpenBSD: ident.c,v 1.29 2011/04/20 19:34:16 nicm Exp $ */ /* * Copyright (c) 2005 Xavier Santolaria <xsa@openbsd.org> * 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. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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 <ctype.h> #include <err.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include "rcsprog.h" #define KEYDELIM '$' /* keywords delimiter */ #define VALDELIM ':' /* values delimiter */ static int found = 0; static int flags = 0; static void ident_file(const char *, FILE *); static void ident_line(FILE *); int ident_main(int argc, char **argv) { int i, ch, status; FILE *fp; status = 0; while ((ch = rcs_getopt(argc, argv, "qV")) != -1) { switch(ch) { case 'q': flags |= QUIET; break; case 'V': printf("%s\n", rcs_version); exit(0); default: (usage)(); exit(1); } } argc -= rcs_optind; argv += rcs_optind; if (argc == 0) ident_file(NULL, stdin); else { for (i = 0; i < argc; i++) { if ((fp = fopen(argv[i], "r")) == NULL) { warn("%s", argv[i]); status = 1; continue; } ident_file(argv[i], fp); (void)fclose(fp); if (i != argc - 1) printf("\n"); } } return (status); } static void ident_file(const char *filename, FILE *fp) { int c; if (filename != NULL) printf("%s:\n", filename); else filename = "standard input"; for (c = 0; c != EOF; c = getc(fp)) { if (feof(fp) || ferror(fp)) break; if (c == KEYDELIM) ident_line(fp); } if (found == 0 && !(flags & QUIET)) fprintf(stderr, "ident warning: no id keywords in %s\n", filename); found = 0; } static void ident_line(FILE *fp) { int c; BUF *bp; size_t len; bp = buf_alloc(512); while ((c = getc(fp)) != VALDELIM) { if (c == EOF) goto out; if (isalpha(c)) buf_putc(bp, c); else goto out; } buf_putc(bp, VALDELIM); while ((c = getc(fp)) != KEYDELIM) { if (c == EOF) goto out; if (c == '\n') goto out; buf_putc(bp, c); } len = buf_len(bp); if (buf_getc(bp, len - 1) != ' ') goto out; /* append trailing KEYDELIM */ buf_putc(bp, c); /* Append newline for printing. */ buf_putc(bp, '\n'); printf(" %c", KEYDELIM); fflush(stdout); buf_write_fd(bp, STDOUT_FILENO); found++; out: if (bp != NULL) buf_free(bp); } void ident_usage(void) { fprintf(stderr, "usage: ident [-qV] [file ...]\n"); }