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Annotation of src/usr.bin/rcs/ident.c, Revision 1.9

1.9     ! xsa         1: /*     $OpenBSD: ident.c,v 1.8 2005/11/30 17:51:12 xsa Exp $   */
1.1       joris       2: /*
                      3:  * Copyright (c) 2005 Xavier Santolaria <xsa@openbsd.org>
                      4:  * All rights reserved.
                      5:  *
                      6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
                      9:  *
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. The name of the author may not be used to endorse or promote products
                     13:  *    derived from this software without specific prior written permission.
                     14:  *
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
                     16:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
                     17:  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
                     18:  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
                     19:  * EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLUDING, BUT NOT LIMITED TO,
                     20:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
                     21:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
                     22:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     23:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
                     24:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     25:  */
                     26:
1.9     ! xsa        27: #include "includes.h"
1.1       joris      28:
                     29: #include "log.h"
                     30: #include "rcs.h"
                     31: #include "rcsprog.h"
                     32:
                     33: #define KEYDELIM       '$'     /* keywords delimitor */
                     34: #define VALDELIM       ':'     /* values delimitor */
                     35:
1.3       joris      36: static int found = 0;
1.1       joris      37:
                     38: static int     ident_file(const char *, FILE *);
                     39: static int     ident_line(FILE *);
                     40:
                     41: int
                     42: ident_main(int argc, char **argv)
                     43: {
                     44:        int i, ch;
                     45:        FILE *fp;
                     46:
1.5       joris      47:        while ((ch = rcs_getopt(argc, argv, "qV")) != -1) {
1.1       joris      48:                switch(ch) {
                     49:                case 'q':
                     50:                        verbose = 0;
                     51:                        break;
                     52:                case 'V':
                     53:                        printf("%s\n", rcs_version);
                     54:                        exit(0);
                     55:                default:
                     56:                        (usage)();
                     57:                        exit(1);
                     58:                }
                     59:        }
                     60:
1.5       joris      61:        argc -= rcs_optind;
                     62:        argv += rcs_optind;
1.1       joris      63:
1.2       xsa        64:        if (argc == 0)
1.1       joris      65:                ident_file(NULL, stdin);
1.2       xsa        66:        else {
1.1       joris      67:                for (i = 0; i < argc; i++) {
                     68:                        if ((fp = fopen(argv[i], "r")) == NULL) {
                     69:                                cvs_log(LP_ERRNO, "%s", argv[i]);
                     70:                                continue;
                     71:                        }
                     72:
                     73:                        ident_file(argv[i], fp);
                     74:                        fclose(fp);
                     75:                }
                     76:        }
                     77:
                     78:        return (0);
                     79: }
                     80:
                     81:
                     82: static int
                     83: ident_file(const char *filename, FILE *fp)
                     84: {
                     85:        int c;
                     86:
1.7       xsa        87:        if (filename != NULL)
1.1       joris      88:                printf("%s:\n", filename);
1.7       xsa        89:        else
                     90:                filename = "standard output";
1.1       joris      91:
                     92:        for (c = 0; c != EOF; (c = getc(fp))) {
                     93:                if ((feof(fp)) || (ferror(fp)))
                     94:                        break;
                     95:                if (c == KEYDELIM)
                     96:                        ident_line(fp);
                     97:        }
1.7       xsa        98:
                     99:        if ((found == 0) && (verbose == 1))
                    100:                fprintf(stderr, "ident warning: no id keywords in %s\n",
                    101:                    filename);
                    102:
                    103:        found = 0;
1.1       joris     104:
                    105:        return (0);
                    106: }
                    107:
                    108: static int
                    109: ident_line(FILE *fp)
                    110: {
                    111:        int c;
                    112:        char *p, linebuf[1024];
                    113:
                    114:        p = linebuf;
                    115:
                    116:        while ((c = getc(fp)) != VALDELIM) {
                    117:                if ((c == EOF) && (feof(fp) | ferror(fp)))
                    118:                        return (0);
                    119:
                    120:                if (isalpha(c))
                    121:                        *(p++) = c;
                    122:                else
                    123:                        return (0);
                    124:        }
                    125:
1.2       xsa       126:        *(p++) = VALDELIM;
1.1       joris     127:
                    128:        while ((c = getc(fp)) != KEYDELIM) {
                    129:                if ((c == EOF) && (feof(fp) | ferror(fp)))
                    130:                        return (0);
                    131:
                    132:                if (c == '\n')
                    133:                        return (0);
                    134:
                    135:                *(p++) = c;
                    136:        }
                    137:
                    138:        if (p[-1] != ' ')
                    139:                return (0);
                    140:
                    141:        /* append trailing KEYDELIM */
                    142:        *(p++) = c;
                    143:        *p = '\0';
                    144:
1.3       joris     145:        found++;
1.2       xsa       146:        printf("     %c%s\n", KEYDELIM, linebuf);
1.1       joris     147:
                    148:        return (0);
                    149: }
                    150:
                    151: void
                    152: ident_usage(void)
                    153: {
1.8       xsa       154:        fprintf(stderr, "usage: ident [-qV] [file ...]\n");
1.1       joris     155: }