1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*
** Copyright (c) 2021 Stephan Beal (https://wanderinghorse.net/home/stephan/)
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
*******************************************************************************
**
** This application reads in Fossil SCM skin configuration files and emits
** them in a form suitable for importing directly into a fossil database
** using the (fossil config import) command.
**
** As input it requires one or more skin configuration files (css.txt,
** header.txt, footer.txt, details.txt, js.txt) and all output goes to
** stdout unless redirected using the -o FILENAME flag.
**
** Run it with no arguments or one of (help, --help, -?) for help text.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <stdarg.h>
static struct App_ {
const char * argv0;
time_t now;
FILE * ostr;
} App = {
0, 0, 0
};
static void err(const char *zFmt, ...){
va_list vargs;
va_start(vargs, zFmt);
fputs("ERROR: ",stderr);
vfprintf(stderr, zFmt, vargs);
fputc('\n', stderr);
va_end(vargs);
}
static void app_usage(int isErr){
FILE * const ios = isErr ? stderr : stdout;
fprintf(ios, "Usage: %s ?OPTIONS? input-filename...\n\n",
App.argv0);
fprintf(ios, "Each filename must be one file which is conventionally "
"part of a Fossil SCM skin set:\n"
" css.txt, header.txt, footer.txt, details.txt, js.txt\n");
fprintf(ios, "\nOptions:\n");
fprintf(ios, "\n\t-o FILENAME = send output to the given file. "
"'-' means stdout (the default).\n");
fputc('\n', ios);
}
/*
** Reads file zFilename, stores its contents in *zContent, and sets the
** length of its contents to *nContent.
**
** Returns 0 on success. On error, *zContent and *nContent are not
** modified and it may emit a message describing the problem.
*/
int read_file(char const *zFilename, unsigned char ** zContent,
int * nContent){
long fpos;
int rc = 0;
unsigned char * zMem = 0;
FILE * f = fopen(zFilename, "rb");
if(!f){
err("Cannot open file %s. Errno=%d", zFilename, errno);
return errno;
}
fseek(f, 0L, SEEK_END);
rc = errno;
if(rc){
err("Cannot seek() file %s. Errno=%d", zFilename, rc);
goto end;
}
fpos = ftell(f);
fseek(f, 0L, SEEK_SET);
zMem = (unsigned char *)malloc((size_t)fpos + 1);
if(!zMem){
err("Malloc failed.");
rc = ENOMEM;
goto end;
}
zMem[fpos] = 0;
if(fpos && (size_t)1 != fread(zMem, (size_t)fpos, 1, f)){
rc = EIO;
err("Error #%d reading file %s", rc, zFilename);
goto end;
}
end:
fclose(f);
if(rc){
free(zMem);
}else{
*zContent = zMem;
*nContent = fpos;
}
return rc;
}
/*
** Expects zFilename to be one of the conventional skin filename
** parts. This routine converts it to config format and emits it to
** App.ostr.
*/
int dispatch_file(char const *zFilename){
const char * zKey = 0;
int nContent = 0, nContent2 = 0, nOut = 0, nTime = 0, rc = 0;
time_t theTime = App.now;
unsigned char * zContent = 0;
unsigned char * z = 0;
if(strstr(zFilename, "css.txt")){
zKey = "css";
}else if(strstr(zFilename, "header.txt")){
zKey = "header";
}else if(strstr(zFilename, "footer.txt")){
zKey = "footer";
}else if(strstr(zFilename, "details.txt")){
zKey = "details";
}else if(strstr(zFilename, "js.txt")){
zKey = "js";
}else {
err("Cannot determine skin part from filename: %s", zFilename);
return 1;
}
rc = read_file(zFilename, &zContent, &nContent);
if(rc) return rc;
for( z = zContent; z < zContent + nContent; ++z ){
/* Count file content length with ' characters doubled */
nContent2 += ('\'' == *z) ? 2 : 1;
}
while(theTime > 0){/* # of digits in time */
++nTime;
theTime /= 10;
}
fprintf(App.ostr, "config /config %d\n",
(int)(nTime + 12/*"value"+spaces+quotes*/
+ (int)strlen(zKey) + nContent2));
fprintf(App.ostr, "%d '%s' value '", (int)App.now, zKey);
for( z = zContent; z < zContent + nContent; ++z ){
/* Emit file content with ' characters doubled */
if('\'' == (char)*z){
fputc('\'', App.ostr);
}
fputc((char)*z, App.ostr);
}
free(zContent);
fprintf(App.ostr, "'\n");
return 0;
}
int main(int argc, char const * const * argv){
int rc = 0, i ;
App.argv0 = argv[0];
App.ostr = stdout;
if(argc<2){
app_usage(1);
rc = 1;
goto end;
}
App.now = time(0);
for( i = 1; i < argc; ++i ){
const char * zArg = argv[i];
if(0==strcmp(zArg,"help") ||
0==strcmp(zArg,"--help") ||
0==strcmp(zArg,"-?")){
app_usage(0);
rc = 0;
break;
}else if(0==strcmp(zArg,"-o")){
/* -o OUTFILE (- == stdout) */
++i;
if(i==argc){
err("Missing filename for -o flag");
rc = 1;
break;
}else{
const char *zOut = argv[i];
if(App.ostr != stdout){
err("Cannot specify -o more than once.");
rc = 1;
break;
}
if(0!=strcmp("-",zOut)){
FILE * o = fopen(zOut, "wb");
if(!o){
err("Could not open file %s for writing. Errno=%d",
zOut, errno);
rc = errno;
break;
}
App.ostr = o;
}
}
}else if('-' == zArg[0]){
err("Unhandled argument: %s", zArg);
rc = 1;
break;
}else{
rc = dispatch_file(zArg);
if(rc) break;
}
}
end:
if(App.ostr != stdout){
fclose(App.ostr);
}
return rc ? EXIT_FAILURE : EXIT_SUCCESS;
}
|
