/[jscoverage]/trunk/instrument.c
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Annotation of /trunk/instrument.c

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Revision 116 - (hide annotations)
Sat May 31 21:42:36 2008 UTC (11 years, 5 months ago) by siliconforks
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File size: 5948 byte(s)
Add jscoverage-server.

1 siliconforks 2 /*
2     instrument.c - file and directory instrumentation routines
3 siliconforks 87 Copyright (C) 2007, 2008 siliconforks.com
4 siliconforks 2
5     This program is free software; you can redistribute it and/or modify
6     it under the terms of the GNU General Public License as published by
7     the Free Software Foundation; either version 2 of the License, or
8     (at your option) any later version.
9    
10     This program is distributed in the hope that it will be useful,
11     but WITHOUT ANY WARRANTY; without even the implied warranty of
12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13     GNU General Public License for more details.
14    
15     You should have received a copy of the GNU General Public License along
16     with this program; if not, write to the Free Software Foundation, Inc.,
17     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18     */
19    
20 siliconforks 116 #include <config.h>
21    
22 siliconforks 2 #include "instrument.h"
23    
24     #include <assert.h>
25     #include <errno.h>
26     #include <string.h>
27    
28     #include <dirent.h>
29     #include <sys/stat.h>
30     #include <sys/types.h>
31    
32     #include "instrument-js.h"
33     #include "resource-manager.h"
34     #include "util.h"
35    
36     static int g_verbose = 0;
37    
38     static int string_ends_with(const char * s, const char * suffix) {
39     size_t length = strlen(s);
40     size_t suffix_length = strlen(suffix);
41     if (length < suffix_length) {
42     return 0;
43     }
44     return strcasecmp(s + (length - suffix_length), suffix) == 0;
45     }
46    
47     static enum FileType get_file_type(const char * file) {
48     if (string_ends_with(file, ".js")) {
49     return FILE_TYPE_JS;
50     }
51     else if (string_ends_with(file, ".html") || string_ends_with(file, ".htm")) {
52     return FILE_TYPE_HTML;
53     }
54     else {
55     return FILE_TYPE_UNKNOWN;
56     }
57     }
58    
59     static void check_same_file(const char * file1, const char * file2) {
60     if (is_same_file(file1, file2)) {
61     fatal("source and destination are the same");
62     }
63     }
64    
65     static void check_contains_file(const char * file1, const char * file2) {
66     if (contains_file(file1, file2)) {
67     fatal("%s contains %s", file1, file2);
68     }
69     }
70    
71     static void instrument_file(const char * source_file, const char * destination_file, const char * id, int instrumenting) {
72     if (g_verbose) {
73     printf("Instrumenting file %s\n", id);
74     }
75    
76     /* check if they are the same */
77     char * canonical_source_file = make_canonical_path(source_file);
78     char * canonical_destination_file = make_canonical_path(destination_file);
79     check_same_file(canonical_source_file, canonical_destination_file);
80     free(canonical_source_file);
81     free(canonical_destination_file);
82    
83     if (instrumenting) {
84     enum FileType file_type = get_file_type(source_file);
85     switch (file_type) {
86     case FILE_TYPE_UNKNOWN:
87     case FILE_TYPE_HTML:
88     copy_file(source_file, destination_file);
89     break;
90     case FILE_TYPE_JS:
91     {
92     FILE * input = xfopen(source_file, "r");
93     FILE * output = xfopen(destination_file, "w");
94 siliconforks 92
95     Stream * input_stream = Stream_new(0);
96     Stream * output_stream = Stream_new(0);
97    
98     Stream_write_file_contents(input_stream, input);
99    
100     jscoverage_instrument_js(id, input_stream, output_stream);
101    
102     if (fwrite(output_stream->data, 1, output_stream->length, output) != output_stream->length) {
103     fatal("cannot write to file: %s", destination_file);
104     }
105    
106     Stream_delete(input_stream);
107     Stream_delete(output_stream);
108    
109 siliconforks 2 fclose(input);
110     fclose(output);
111     }
112     break;
113     }
114     }
115     else {
116     copy_file(source_file, destination_file);
117     }
118     }
119    
120     void jscoverage_instrument(const char * source,
121     const char * destination,
122     int verbose,
123     char ** exclude,
124     int num_exclude,
125     char ** no_instrument,
126     int num_no_instrument)
127     {
128     assert(source != NULL);
129     assert(destination != NULL);
130    
131     g_verbose = verbose;
132    
133     /* check if they are the same */
134     check_same_file(source, destination);
135    
136     /* check if source directory is an ancestor of destination directory */
137     check_contains_file(source, destination);
138    
139     /* check that the source exists and is a directory */
140     struct stat buf;
141     xstat(source, &buf);
142     if (! S_ISDIR(buf.st_mode)) {
143     fatal("not a directory: %s", source);
144     }
145    
146     /* if the destination directory exists, check that it is a jscoverage directory */
147     if (stat(destination, &buf) == 0) {
148     /* it exists */
149     if (! S_ISDIR(buf.st_mode)) {
150     fatal("not a directory: %s", destination);
151     }
152     if (! directory_is_empty(destination)) {
153     char * jscoverage_html = make_path(destination, "jscoverage.html");
154     if (stat(jscoverage_html, &buf) == -1) {
155     fatal("refusing to overwrite directory: %s", destination);
156     }
157     free(jscoverage_html);
158     }
159     }
160     else if (errno == ENOENT) {
161     xmkdir(destination);
162     }
163     else {
164     fatal("cannot stat directory: %s", destination);
165     }
166    
167 siliconforks 69 /* copy the resources */
168     jscoverage_copy_resources(destination);
169    
170 siliconforks 2 /* finally: copy the directory */
171     struct DirListEntry * list = make_recursive_dir_list(source);
172     for (struct DirListEntry * p = list; p != NULL; p = p->next) {
173     char * s = make_path(source, p->name);
174     char * d = make_path(destination, p->name);
175    
176     /* check if it's on the exclude list */
177     for (int i = 0; i < num_exclude; i++) {
178     char * x = make_path(source, exclude[i]);
179     if (is_same_file(x, s) || contains_file(x, s)) {
180     free(x);
181     goto cleanup;
182     }
183     free(x);
184     }
185    
186     char * dd = make_dirname(d);
187     mkdirs(dd);
188     free(dd);
189    
190     int instrument_this = 1;
191    
192     /* check if it's on the no-instrument list */
193     for (int i = 0; i < num_no_instrument; i++) {
194     char * ni = make_path(source, no_instrument[i]);
195     if (is_same_file(ni, s) || contains_file(ni, s)) {
196     instrument_this = 0;
197     }
198     free(ni);
199     }
200    
201     instrument_file(s, d, p->name, instrument_this);
202    
203     cleanup:
204     free(s);
205     free(d);
206     }
207     free_dir_list(list);
208     }

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