1 /* source.c - Keep track of source files.
2
3 Copyright (C) 2000-2016 Free Software Foundation, Inc.
4
5 This file is part of GNU Binutils.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
20 02110-1301, USA. */
21
22 #include "gprof.h"
23 #include "libiberty.h"
24 #include "filenames.h"
25 #include "search_list.h"
26 #include "source.h"
27
28 #define EXT_ANNO "-ann" /* Postfix of annotated files. */
29
30 /* Default option values. */
31 bfd_boolean create_annotation_files = FALSE;
32
33 Search_List src_search_list = {0, 0};
34 Source_File *first_src_file = 0;
35
36
37 Source_File *
source_file_lookup_path(const char * path)38 source_file_lookup_path (const char *path)
39 {
40 Source_File *sf;
41
42 for (sf = first_src_file; sf; sf = sf->next)
43 {
44 if (FILENAME_CMP (path, sf->name) == 0)
45 break;
46 }
47
48 if (!sf)
49 {
50 /* Create a new source file descriptor. */
51 sf = (Source_File *) xmalloc (sizeof (*sf));
52
53 memset (sf, 0, sizeof (*sf));
54
55 sf->name = xstrdup (path);
56 sf->next = first_src_file;
57 first_src_file = sf;
58 }
59
60 return sf;
61 }
62
63
64 Source_File *
source_file_lookup_name(const char * filename)65 source_file_lookup_name (const char *filename)
66 {
67 const char *fname;
68 Source_File *sf;
69
70 /* The user cannot know exactly how a filename will be stored in
71 the debugging info (e.g., ../include/foo.h
72 vs. /usr/include/foo.h). So we simply compare the filename
73 component of a path only. */
74 for (sf = first_src_file; sf; sf = sf->next)
75 {
76 fname = strrchr (sf->name, '/');
77
78 if (fname)
79 ++fname;
80 else
81 fname = sf->name;
82
83 if (FILENAME_CMP (filename, fname) == 0)
84 break;
85 }
86
87 return sf;
88 }
89
90
91 FILE *
annotate_source(Source_File * sf,unsigned int max_width,void (* annote)(char *,unsigned int,int,void *),void * arg)92 annotate_source (Source_File *sf, unsigned int max_width,
93 void (*annote) (char *, unsigned int, int, void *),
94 void *arg)
95 {
96 static bfd_boolean first_file = TRUE;
97 int i, line_num, nread;
98 bfd_boolean new_line;
99 char buf[8192];
100 char fname[PATH_MAX];
101 char *annotation, *name_only;
102 FILE *ifp, *ofp;
103 Search_List_Elem *sle = src_search_list.head;
104
105 /* Open input file. If open fails, walk along search-list until
106 open succeeds or reaching end of list. */
107 strcpy (fname, sf->name);
108
109 if (IS_ABSOLUTE_PATH (sf->name))
110 sle = 0; /* Don't use search list for absolute paths. */
111
112 name_only = 0;
113 while (TRUE)
114 {
115 DBG (SRCDEBUG, printf ("[annotate_source]: looking for %s, trying %s\n",
116 sf->name, fname));
117
118 ifp = fopen (fname, FOPEN_RB);
119 if (ifp)
120 break;
121
122 if (!sle && !name_only)
123 {
124 name_only = strrchr (sf->name, '/');
125 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
126 {
127 char *bslash = strrchr (sf->name, '\\');
128 if (name_only == NULL || (bslash != NULL && bslash > name_only))
129 name_only = bslash;
130 if (name_only == NULL && sf->name[0] != '\0' && sf->name[1] == ':')
131 name_only = (char *)sf->name + 1;
132 }
133 #endif
134 if (name_only)
135 {
136 /* Try search-list again, but this time with name only. */
137 ++name_only;
138 sle = src_search_list.head;
139 }
140 }
141
142 if (sle)
143 {
144 strcpy (fname, sle->path);
145 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
146 /* d:foo is not the same thing as d:/foo! */
147 if (fname[strlen (fname) - 1] == ':')
148 strcat (fname, ".");
149 #endif
150 strcat (fname, "/");
151
152 if (name_only)
153 strcat (fname, name_only);
154 else
155 strcat (fname, sf->name);
156
157 sle = sle->next;
158 }
159 else
160 {
161 if (errno == ENOENT)
162 fprintf (stderr, _("%s: could not locate `%s'\n"),
163 whoami, sf->name);
164 else
165 perror (sf->name);
166
167 return 0;
168 }
169 }
170
171 ofp = stdout;
172
173 if (create_annotation_files)
174 {
175 /* Try to create annotated source file. */
176 const char *filename;
177
178 /* Create annotation files in the current working directory. */
179 filename = strrchr (sf->name, '/');
180 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
181 {
182 char *bslash = strrchr (sf->name, '\\');
183 if (filename == NULL || (bslash != NULL && bslash > filename))
184 filename = bslash;
185 if (filename == NULL && sf->name[0] != '\0' && sf->name[1] == ':')
186 filename = sf->name + 1;
187 }
188 #endif
189 if (filename)
190 ++filename;
191 else
192 filename = sf->name;
193
194 strcpy (fname, filename);
195 strcat (fname, EXT_ANNO);
196 #ifdef __MSDOS__
197 {
198 /* foo.cpp-ann can overwrite foo.cpp due to silent truncation of
199 file names on 8+3 filesystems. Their `stat' better be good... */
200 struct stat buf1, buf2;
201
202 if (stat (filename, &buf1) == 0
203 && stat (fname, &buf2) == 0
204 && buf1.st_ino == buf2.st_ino)
205 {
206 char *dot = strrchr (fname, '.');
207
208 if (dot)
209 *dot = '\0';
210 strcat (fname, ".ann");
211 }
212 }
213 #endif
214 ofp = fopen (fname, "w");
215
216 if (!ofp)
217 {
218 perror (fname);
219 return 0;
220 }
221 }
222
223 /* Print file names if output goes to stdout
224 and there are more than one source file. */
225 if (ofp == stdout)
226 {
227 if (first_file)
228 first_file = FALSE;
229 else
230 fputc ('\n', ofp);
231
232 if (first_output)
233 first_output = FALSE;
234 else
235 fprintf (ofp, "\f\n");
236
237 fprintf (ofp, _("*** File %s:\n"), sf->name);
238 }
239
240 annotation = (char *) xmalloc (max_width + 1);
241 line_num = 1;
242 new_line = TRUE;
243
244 while ((nread = fread (buf, 1, sizeof (buf), ifp)) > 0)
245 {
246 for (i = 0; i < nread; ++i)
247 {
248 if (new_line)
249 {
250 (*annote) (annotation, max_width, line_num, arg);
251 fputs (annotation, ofp);
252 ++line_num;
253 new_line = FALSE;
254 }
255
256 new_line = (buf[i] == '\n');
257 fputc (buf[i], ofp);
258 }
259 }
260
261 free (annotation);
262 fclose (ifp);
263 return ofp;
264 }
265