270 lines
6.1 KiB
C
270 lines
6.1 KiB
C
/* source.c - Keep track of source files.
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Copyright (C) 2000-2022 Free Software Foundation, Inc.
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This file is part of GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "gprof.h"
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#include "libiberty.h"
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#include "filenames.h"
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#include "search_list.h"
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#include "source.h"
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#define EXT_ANNO "-ann" /* Postfix of annotated files. */
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/* Default option values. */
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bool create_annotation_files = false;
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Search_List src_search_list = {0, 0};
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Source_File *first_src_file = 0;
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Source_File *
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source_file_lookup_path (const char *path)
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{
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Source_File *sf;
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for (sf = first_src_file; sf; sf = sf->next)
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{
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if (FILENAME_CMP (path, sf->name) == 0)
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break;
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}
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if (!sf)
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{
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/* Create a new source file descriptor. */
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sf = (Source_File *) xmalloc (sizeof (*sf));
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memset (sf, 0, sizeof (*sf));
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sf->name = xstrdup (path);
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sf->next = first_src_file;
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first_src_file = sf;
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}
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return sf;
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}
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Source_File *
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source_file_lookup_name (const char *filename)
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{
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const char *fname;
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Source_File *sf;
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/* The user cannot know exactly how a filename will be stored in
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the debugging info (e.g., ../include/foo.h
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vs. /usr/include/foo.h). So we simply compare the filename
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component of a path only. */
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for (sf = first_src_file; sf; sf = sf->next)
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{
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fname = strrchr (sf->name, '/');
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if (fname)
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++fname;
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else
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fname = sf->name;
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if (FILENAME_CMP (filename, fname) == 0)
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break;
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}
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return sf;
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}
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FILE *
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annotate_source (Source_File *sf, unsigned int max_width,
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void (*annote) (char *, unsigned int, int, void *),
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void *arg)
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{
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static bool first_file = true;
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int i, line_num, nread;
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bool new_line;
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char buf[8192];
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char *fname;
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char *annotation, *name_only;
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FILE *ifp, *ofp;
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Search_List_Elem *sle = src_search_list.head;
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/* Open input file. If open fails, walk along search-list until
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open succeeds or reaching end of list. */
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fname = (char *) sf->name;
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if (IS_ABSOLUTE_PATH (sf->name))
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sle = 0; /* Don't use search list for absolute paths. */
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name_only = 0;
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while (true)
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{
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DBG (SRCDEBUG, printf ("[annotate_source]: looking for %s, trying %s\n",
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sf->name, fname));
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ifp = fopen (fname, FOPEN_RB);
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if (fname != sf->name)
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free (fname);
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if (ifp)
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break;
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if (!sle && !name_only)
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{
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name_only = strrchr (sf->name, '/');
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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{
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char *bslash = strrchr (sf->name, '\\');
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if (name_only == NULL || (bslash != NULL && bslash > name_only))
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name_only = bslash;
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if (name_only == NULL && sf->name[0] != '\0' && sf->name[1] == ':')
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name_only = (char *)sf->name + 1;
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}
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#endif
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if (name_only)
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{
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/* Try search-list again, but this time with name only. */
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++name_only;
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sle = src_search_list.head;
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}
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}
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if (sle)
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{
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fname = xmalloc (strlen (sle->path) + 3
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+ strlen (name_only ? name_only : sf->name));
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strcpy (fname, sle->path);
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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/* d:foo is not the same thing as d:/foo! */
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if (fname[strlen (fname) - 1] == ':')
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strcat (fname, ".");
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#endif
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strcat (fname, "/");
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if (name_only)
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strcat (fname, name_only);
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else
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strcat (fname, sf->name);
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sle = sle->next;
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}
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else
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{
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if (errno == ENOENT)
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fprintf (stderr, _("%s: could not locate `%s'\n"),
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whoami, sf->name);
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else
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perror (sf->name);
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return 0;
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}
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}
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ofp = stdout;
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if (create_annotation_files)
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{
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/* Try to create annotated source file. */
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const char *filename;
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/* Create annotation files in the current working directory. */
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filename = strrchr (sf->name, '/');
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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{
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char *bslash = strrchr (sf->name, '\\');
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if (filename == NULL || (bslash != NULL && bslash > filename))
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filename = bslash;
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if (filename == NULL && sf->name[0] != '\0' && sf->name[1] == ':')
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filename = sf->name + 1;
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}
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#endif
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if (filename)
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++filename;
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else
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filename = sf->name;
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fname = xmalloc (strlen (filename) + strlen (EXT_ANNO) + 1);
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strcpy (fname, filename);
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strcat (fname, EXT_ANNO);
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#ifdef __MSDOS__
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{
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/* foo.cpp-ann can overwrite foo.cpp due to silent truncation of
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file names on 8+3 filesystems. Their `stat' better be good... */
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struct stat buf1, buf2;
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if (stat (filename, &buf1) == 0
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&& stat (fname, &buf2) == 0
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&& buf1.st_ino == buf2.st_ino)
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{
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char *dot = strrchr (fname, '.');
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if (!dot)
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dot = fname + strlen (filename);
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strcpy (dot, ".ann");
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}
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}
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#endif
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ofp = fopen (fname, "w");
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if (!ofp)
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{
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perror (fname);
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free (fname);
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return 0;
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}
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free (fname);
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}
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/* Print file names if output goes to stdout
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and there are more than one source file. */
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if (ofp == stdout)
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{
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if (first_file)
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first_file = false;
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else
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fputc ('\n', ofp);
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if (first_output)
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first_output = false;
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else
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fprintf (ofp, "\f\n");
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fprintf (ofp, _("*** File %s:\n"), sf->name);
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}
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annotation = (char *) xmalloc (max_width + 1);
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line_num = 1;
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new_line = true;
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while ((nread = fread (buf, 1, sizeof (buf), ifp)) > 0)
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{
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for (i = 0; i < nread; ++i)
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{
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if (new_line)
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{
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(*annote) (annotation, max_width, line_num, arg);
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fputs (annotation, ofp);
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++line_num;
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}
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new_line = (buf[i] == '\n');
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fputc (buf[i], ofp);
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}
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}
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free (annotation);
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fclose (ifp);
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return ofp;
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}
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