Annotation of mandoc/mdocml.c, Revision 1.4
1.4 ! kristaps 1: /* $Id: mdocml.c,v 1.3 2008/11/22 17:14:32 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
19: #include <sys/param.h>
20: #include <sys/stat.h>
21:
22: #include <assert.h>
23: #include <err.h>
24: #include <fcntl.h>
25: #include <getopt.h>
26: #include <stdio.h>
27: #include <stdlib.h>
28: #include <string.h>
29: #include <unistd.h>
30:
31: #include "libmdocml.h"
32:
1.3 kristaps 33: #define BUFFER_IN_DEF BUFSIZ
34: #define BUFFER_OUT_DEF BUFSIZ
1.2 kristaps 35:
1.1 kristaps 36: static void usage(void);
1.4 ! kristaps 37: static int begin_io(const char *, const char *);
! 38: static int leave_io(const struct md_mbuf *,
! 39: const struct md_rbuf *, int);
! 40: static int begin_bufs(struct md_mbuf *, struct md_rbuf *);
! 41: static int leave_bufs(const struct md_mbuf *,
! 42: const struct md_rbuf *, int);
1.1 kristaps 43:
44: int
45: main(int argc, char *argv[])
46: {
47: int c;
48: char *out, *in;
49:
50: extern char *optarg;
51: extern int optind;
52:
1.4 ! kristaps 53: out = in = NULL;
1.1 kristaps 54:
55: while (-1 != (c = getopt(argc, argv, "o:")))
56: switch (c) {
57: case ('o'):
58: out = optarg;
59: break;
60: default:
61: usage();
62: return(1);
63: }
64:
65: argv += optind;
1.4 ! kristaps 66: argc -= optind;
1.1 kristaps 67:
1.4 ! kristaps 68: if (1 == argc)
! 69: in = *argv++;
1.1 kristaps 70:
1.4 ! kristaps 71: return(begin_io(out ? out : "-", in ? in : "-"));
1.1 kristaps 72: }
73:
74:
75: static int
1.4 ! kristaps 76: leave_io(const struct md_mbuf *out,
! 77: const struct md_rbuf *in, int c)
1.1 kristaps 78: {
1.4 ! kristaps 79: assert(out);
1.1 kristaps 80: assert(in);
81:
1.4 ! kristaps 82: if (-1 != in->fd && -1 == close(in->fd)) {
! 83: assert(in->name);
! 84: warn("%s", in->name);
! 85: c = 1;
! 86: }
! 87: if (-1 != out->fd && STDOUT_FILENO != out->fd &&
! 88: -1 == close(out->fd)) {
! 89: assert(out->name);
! 90: warn("%s", out->name);
! 91: c = 1;
! 92: }
1.1 kristaps 93:
1.4 ! kristaps 94: return(c);
1.1 kristaps 95: }
96:
97:
98: static int
1.4 ! kristaps 99: begin_io(const char *out, const char *in)
1.1 kristaps 100: {
1.4 ! kristaps 101: struct md_rbuf fi;
! 102: struct md_mbuf fo;
! 103:
! 104: #define FI_FL O_RDONLY
! 105: #define FO_FL O_WRONLY|O_CREAT|O_TRUNC
1.1 kristaps 106:
107: assert(out);
108: assert(in);
109:
1.4 ! kristaps 110: bzero(&fi, sizeof(struct md_rbuf));
! 111: bzero(&fo, sizeof(struct md_mbuf));
1.1 kristaps 112:
1.4 ! kristaps 113: fi.fd = STDIN_FILENO;
! 114: fo.fd = STDOUT_FILENO;
1.1 kristaps 115:
1.4 ! kristaps 116: fi.name = in;
! 117: fo.name = out;
1.1 kristaps 118:
1.4 ! kristaps 119: if (0 != strncmp(fi.name, "-", 1))
! 120: if (-1 == (fi.fd = open(fi.name, FI_FL, 0))) {
! 121: warn("%s", fi.name);
! 122: return(leave_io(&fo, &fi, 1));
! 123: }
1.1 kristaps 124:
1.4 ! kristaps 125: if (0 != strncmp(fo.name, "-", 1))
! 126: if (-1 == (fo.fd = open(fo.name, FO_FL, 0644))) {
! 127: warn("%s", fo.name);
! 128: return(leave_io(&fo, &fi, 1));
! 129: }
1.1 kristaps 130:
1.4 ! kristaps 131: return(leave_io(&fo, &fi, begin_bufs(&fo, &fi)));
! 132: }
1.1 kristaps 133:
134:
1.4 ! kristaps 135: static int
! 136: leave_bufs(const struct md_mbuf *out,
! 137: const struct md_rbuf *in, int c)
! 138: {
! 139: assert(out);
! 140: assert(in);
! 141: if (out->buf)
! 142: free(out->buf);
! 143: if (in->buf)
! 144: free(in->buf);
1.1 kristaps 145: return(c);
146: }
147:
148:
149: static int
1.4 ! kristaps 150: begin_bufs(struct md_mbuf *out, struct md_rbuf *in)
1.1 kristaps 151: {
152: struct stat stin, stout;
153:
154: assert(in);
155: assert(out);
156:
157: if (-1 == fstat(in->fd, &stin)) {
1.3 kristaps 158: warn("%s", in->name);
1.1 kristaps 159: return(1);
160: } else if (-1 == fstat(out->fd, &stout)) {
1.3 kristaps 161: warn("%s", out->name);
1.1 kristaps 162: return(1);
163: }
164:
1.3 kristaps 165: in->bufsz = MAX(stin.st_blksize, BUFFER_IN_DEF);
166: out->bufsz = MAX(stout.st_blksize, BUFFER_OUT_DEF);
1.1 kristaps 167:
1.3 kristaps 168: if (NULL == (in->buf = malloc(in->bufsz))) {
1.1 kristaps 169: warn("malloc");
1.4 ! kristaps 170: return(leave_bufs(out, in, 1));
1.3 kristaps 171: } else if (NULL == (out->buf = malloc(out->bufsz))) {
1.1 kristaps 172: warn("malloc");
1.4 ! kristaps 173: return(leave_bufs(out, in, 1));
1.1 kristaps 174: }
175:
1.4 ! kristaps 176: return(leave_bufs(out, in, md_run(MD_DUMMY, out, in)));
1.1 kristaps 177: }
178:
179:
180: static void
181: usage(void)
182: {
183: extern char *__progname;
184:
1.4 ! kristaps 185: (void)printf("usage: %s [-o outfile] [infile]\n", __progname);
1.1 kristaps 186: }
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