/* Part of CPP library. File handling.
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+ 2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
Written by Per Bothner, 1994.
Based on CCCP program by Paul Rubin, June 1986
Adapted to ANSI C, Richard Stallman, Jan 1987
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
-Free Software Foundation; either version 2, or (at your option) any
+Free Software Foundation; either version 3, or (at your option) any
later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+along with this program; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "cpplib.h"
#include "internal.h"
#include "mkdeps.h"
+#include "obstack.h"
#include "hashtab.h"
#include "md5.h"
#include <dirent.h>
#endif
#ifdef __DJGPP__
+#include <io.h>
/* For DJGPP redirected input is opened in text mode. */
# define set_stdin_to_binary_mode() \
if (! isatty (0)) setmode (0, O_BINARY)
/* The contents of NAME after calling read_file(). */
const uchar *buffer;
+ /* Pointer to the real start of BUFFER. read_file() might increment
+ BUFFER; when freeing, this this pointer must be used instead. */
+ const uchar *buffer_start;
+
/* The macro, if any, preventing re-inclusion. */
const cpp_hashnode *cmacro;
/* If BUFFER above contains the true contents of the file. */
bool buffer_valid;
-
- /* File is a PCH (on return from find_include_file). */
- bool pch;
};
/* A singly-linked list for all searches for a given file name, with
{
struct file_hash_entry *next;
cpp_dir *start_dir;
+ source_location location;
union
{
_cpp_file *file;
} u;
};
+/* Number of entries to put in a file_hash_entry pool. */
+#define FILE_HASH_POOL_SIZE 127
+
+/* A file hash entry pool. We allocate file_hash_entry object from
+ one of these. */
+struct file_hash_entry_pool
+{
+ /* Number of entries used from this pool. */
+ unsigned int file_hash_entries_used;
+ /* Next pool in the chain; used when freeing. */
+ struct file_hash_entry_pool *next;
+ /* The memory pool. */
+ struct file_hash_entry pool[FILE_HASH_POOL_SIZE];
+};
+
static bool open_file (_cpp_file *file);
static bool pch_open_file (cpp_reader *pfile, _cpp_file *file,
bool *invalid_pch);
static struct cpp_dir *search_path_head (cpp_reader *, const char *fname,
int angle_brackets, enum include_type);
static const char *dir_name_of_file (_cpp_file *file);
-static void open_file_failed (cpp_reader *pfile, _cpp_file *file);
+static void open_file_failed (cpp_reader *pfile, _cpp_file *file, int);
static struct file_hash_entry *search_cache (struct file_hash_entry *head,
const cpp_dir *start_dir);
static _cpp_file *make_cpp_file (cpp_reader *, cpp_dir *, const char *fname);
static char *remap_filename (cpp_reader *pfile, _cpp_file *file);
static char *append_file_to_dir (const char *fname, cpp_dir *dir);
static bool validate_pch (cpp_reader *, _cpp_file *file, const char *pchname);
-static int pchf_adder (void **slot, void *data);
static int pchf_save_compare (const void *e1, const void *e2);
static int pchf_compare (const void *d_p, const void *e_p);
static bool check_file_against_entries (cpp_reader *, _cpp_file *, bool);
close (file->fd);
file->fd = -1;
}
+#if defined(_WIN32) && !defined(__CYGWIN__)
+ else if (errno == EACCES)
+ {
+ /* On most UNIX systems, open succeeds on a directory. Above,
+ we check if we have opened a directory and if so, set errno
+ to ENOENT. However, on Windows, opening a directory
+ fails with EACCES. We want to return ENOENT in that
+ case too. */
+ if (stat (file->path, &file->st) == 0
+ && S_ISDIR (file->st.st_mode))
+ errno = ENOENT;
+ else
+ /* The call to stat may have reset errno. */
+ errno = EACCES;
+ }
+#endif
else if (errno == ENOTDIR)
errno = ENOENT;
if (file->name[0] == '\0' || !pfile->cb.valid_pch)
return false;
+ /* If the file is not included as first include from either the toplevel
+ file or the command-line it is not a valid use of PCH. */
+ if (pfile->all_files
+ && pfile->all_files->next_file)
+ return false;
+
flen = strlen (path);
len = flen + sizeof (extension);
- pchname = xmalloc (len);
+ pchname = XNEWVEC (char, len);
memcpy (pchname, path, flen);
memcpy (pchname + flen, extension, sizeof (extension));
if (dlen + plen > len)
{
len += dlen + 64;
- pchname = xrealloc (pchname, len);
+ pchname = XRESIZEVEC (char, pchname, len);
}
memcpy (pchname + plen, d->d_name, dlen);
valid = validate_pch (pfile, file, pchname);
}
closedir (pchdir);
}
- if (valid)
- file->pch = true;
- else
+ if (!valid)
*invalid_pch = true;
}
if (path)
{
+ hashval_t hv = htab_hash_string (path);
+ char *copy;
+ void **pp;
+
+ if (htab_find_with_hash (pfile->nonexistent_file_hash, path, hv) != NULL)
+ {
+ file->err_no = ENOENT;
+ return false;
+ }
+
file->path = path;
if (pch_open_file (pfile, file, invalid_pch))
return true;
if (file->err_no != ENOENT)
{
- open_file_failed (pfile, file);
+ open_file_failed (pfile, file, 0);
return true;
}
+ /* We copy the path name onto an obstack partly so that we don't
+ leak the memory, but mostly so that we don't fragment the
+ heap. */
+ copy = (char *) obstack_copy0 (&pfile->nonexistent_file_ob, path,
+ strlen (path));
free (path);
+ pp = htab_find_slot_with_hash (pfile->nonexistent_file_hash,
+ copy, hv, INSERT);
+ *pp = copy;
+
file->path = file->name;
}
else
to open_file().
*/
_cpp_file *
-_cpp_find_file (cpp_reader *pfile, const char *fname, cpp_dir *start_dir, bool fake)
+_cpp_find_file (cpp_reader *pfile, const char *fname, cpp_dir *start_dir, bool fake, int angle_brackets)
{
struct file_hash_entry *entry, **hash_slot;
_cpp_file *file;
bool invalid_pch = false;
+ bool saw_bracket_include = false;
+ bool saw_quote_include = false;
+ struct cpp_dir *found_in_cache = NULL;
/* Ensure we get no confusion between cached files and directories. */
if (start_dir == NULL)
/* Try each path in the include chain. */
for (; !fake ;)
{
- if (file->dir == pfile->quote_include
- || file->dir == pfile->bracket_include)
- {
- entry = search_cache (*hash_slot, file->dir);
- if (entry)
- {
- /* Found the same file again. Record it as reachable
- from this position, too. */
- free ((char *) file->name);
- free (file);
- file = entry->u.file;
- goto found;
- }
- }
-
if (find_file_in_dir (pfile, file, &invalid_pch))
break;
return file;
}
- open_file_failed (pfile, file);
if (invalid_pch)
{
cpp_error (pfile, CPP_DL_ERROR,
cpp_error (pfile, CPP_DL_ERROR,
"use -Winvalid-pch for more information");
}
+ open_file_failed (pfile, file, angle_brackets);
break;
}
- }
-
- /* This is a new file; put it in the list. */
- file->next_file = pfile->all_files;
- pfile->all_files = file;
- /* If this file was found in the directory-of-the-current-file,
- check whether that directory is reachable via one of the normal
- search paths. If so, we must record this entry as being
- reachable that way, otherwise we will mistakenly reprocess this
- file if it is included later from the normal search path. */
- if (file->dir && start_dir->next == pfile->quote_include)
- {
- cpp_dir *d;
- cpp_dir *proper_start_dir = pfile->quote_include;
+ /* Only check the cache for the starting location (done above)
+ and the quote and bracket chain heads because there are no
+ other possible starting points for searches. */
+ if (file->dir == pfile->bracket_include)
+ saw_bracket_include = true;
+ else if (file->dir == pfile->quote_include)
+ saw_quote_include = true;
+ else
+ continue;
- for (d = proper_start_dir;; d = d->next)
+ entry = search_cache (*hash_slot, file->dir);
+ if (entry)
{
- if (d == pfile->bracket_include)
- proper_start_dir = d;
- if (d == 0)
- {
- proper_start_dir = 0;
- break;
- }
- /* file->dir->name will have a trailing slash. */
- if (!strncmp (d->name, file->dir->name, file->dir->len - 1))
- break;
+ found_in_cache = file->dir;
+ break;
}
- if (proper_start_dir)
- start_dir = proper_start_dir;
}
- found:
+ if (entry)
+ {
+ /* Cache for START_DIR too, sharing the _cpp_file structure. */
+ free ((char *) file->name);
+ free (file);
+ file = entry->u.file;
+ }
+ else
+ {
+ /* This is a new file; put it in the list. */
+ file->next_file = pfile->all_files;
+ pfile->all_files = file;
+ }
+
/* Store this new result in the hash table. */
entry = new_file_hash_entry (pfile);
entry->next = *hash_slot;
entry->start_dir = start_dir;
+ entry->location = pfile->line_table->highest_location;
entry->u.file = file;
*hash_slot = entry;
+ /* If we passed the quote or bracket chain heads, cache them also.
+ This speeds up processing if there are lots of -I options. */
+ if (saw_bracket_include
+ && pfile->bracket_include != start_dir
+ && found_in_cache != pfile->bracket_include)
+ {
+ entry = new_file_hash_entry (pfile);
+ entry->next = *hash_slot;
+ entry->start_dir = pfile->bracket_include;
+ entry->location = pfile->line_table->highest_location;
+ entry->u.file = file;
+ *hash_slot = entry;
+ }
+ if (saw_quote_include
+ && pfile->quote_include != start_dir
+ && found_in_cache != pfile->quote_include)
+ {
+ entry = new_file_hash_entry (pfile);
+ entry->next = *hash_slot;
+ entry->start_dir = pfile->quote_include;
+ entry->location = pfile->line_table->highest_location;
+ entry->u.file = file;
+ *hash_slot = entry;
+ }
+
return file;
}
return false;
}
- regular = S_ISREG (file->st.st_mode);
+ regular = S_ISREG (file->st.st_mode) != 0;
if (regular)
{
/* off_t might have a wider range than ssize_t - in other words,
the majority of C source files. */
size = 8 * 1024;
- buf = xmalloc (size + 1);
+ buf = XNEWVEC (uchar, size + 1);
total = 0;
while ((count = read (file->fd, buf + total, size - total)) > 0)
{
if (regular)
break;
size *= 2;
- buf = xrealloc (buf, size + 1);
+ buf = XRESIZEVEC (uchar, buf, size + 1);
}
}
cpp_error (pfile, CPP_DL_WARNING,
"%s is shorter than expected", file->path);
- file->buffer = _cpp_convert_input (pfile, CPP_OPTION (pfile, input_charset),
- buf, size, total, &file->st.st_size);
+ file->buffer = _cpp_convert_input (pfile,
+ CPP_OPTION (pfile, input_charset),
+ buf, size, total,
+ &file->buffer_start,
+ &file->st.st_size);
file->buffer_valid = true;
return true;
if (file->fd == -1 && !open_file (file))
{
- open_file_failed (pfile, file);
+ open_file_failed (pfile, file, 0);
return false;
}
return false;
/* Handle PCH files immediately; don't stack them. */
- if (file->pch)
+ if (file->pchname)
{
pfile->cb.read_pch (pfile, file->pchname, file->fd, file->path);
- close (file->fd);
file->fd = -1;
+ free ((void *) file->pchname);
+ file->pchname = NULL;
return false;
}
/* Stack the buffer. */
buffer = cpp_push_buffer (pfile, file->buffer, file->st.st_size,
- CPP_OPTION (pfile, preprocessed));
+ CPP_OPTION (pfile, preprocessed)
+ && !CPP_OPTION (pfile, directives_only));
buffer->file = file;
buffer->sysp = sysp;
/* For #include_next, skip in the search path past the dir in which
the current file was found, but if it was found via an absolute
path use the normal search logic. */
- if (type == IT_INCLUDE_NEXT && file->dir)
+ if (type == IT_INCLUDE_NEXT && file->dir
+ && file->dir != &pfile->no_search_path)
dir = file->dir->next;
else if (angle_brackets)
dir = pfile->bracket_include;
if (!file->dir_name)
{
size_t len = lbasename (file->path) - file->path;
- char *dir_name = xmalloc (len + 1);
+ char *dir_name = XNEWVEC (char, len + 1);
memcpy (dir_name, file->path, len);
dir_name[len] = '\0';
if (!dir)
return false;
- file = _cpp_find_file (pfile, fname, dir, false);
-
- /* Compensate for the increment in linemap_add. In the case of a
- normal #include, we're currently at the start of the line
- *following* the #include. A separate source_location for this
- location makes no sense (until we do the LC_LEAVE), and
- complicates LAST_SOURCE_LINE_LOCATION. This does not apply if we
- found a PCH file (in which case linemap_add is not called) or we
- were included from the command-line. */
- if (! file->pch && file->err_no == 0 && type != IT_CMDLINE)
+ file = _cpp_find_file (pfile, fname, dir, false, angle_brackets);
+
+ /* Compensate for the increment in linemap_add that occurs in
+ _cpp_stack_file. In the case of a normal #include, we're
+ currently at the start of the line *following* the #include. A
+ separate source_location for this location makes no sense (until
+ we do the LC_LEAVE), and complicates LAST_SOURCE_LINE_LOCATION.
+ This does not apply if we found a PCH file (in which case
+ linemap_add is not called) or we were included from the
+ command-line. */
+ if (file->pchname == NULL && file->err_no == 0 && type != IT_CMDLINE)
pfile->line_table->highest_location--;
return _cpp_stack_file (pfile, file, type == IT_IMPORT);
/* Could not open FILE. The complication is dependency output. */
static void
-open_file_failed (cpp_reader *pfile, _cpp_file *file)
+open_file_failed (cpp_reader *pfile, _cpp_file *file, int angle_brackets)
{
int sysp = pfile->line_table->highest_line > 1 && pfile->buffer ? pfile->buffer->sysp : 0;
- bool print_dep = CPP_OPTION (pfile, deps.style) > !!sysp;
+ bool print_dep = CPP_OPTION (pfile, deps.style) > (angle_brackets || !!sysp);
errno = file->err_no;
if (print_dep && CPP_OPTION (pfile, deps.missing_files) && errno == ENOENT)
- deps_add_dep (pfile->deps, file->name);
+ {
+ deps_add_dep (pfile->deps, file->name);
+ /* If the preprocessor output (other than dependency information) is
+ being used, we must also flag an error. */
+ if (CPP_OPTION (pfile, deps.need_preprocessor_output))
+ cpp_errno (pfile, CPP_DL_FATAL, file->path);
+ }
else
{
- /* If we are outputting dependencies but not for this file then
- don't error because we can still produce correct output. */
- if (CPP_OPTION (pfile, deps.style) && ! print_dep)
- cpp_errno (pfile, CPP_DL_WARNING, file->path);
+ /* If we are not outputting dependencies, or if we are and dependencies
+ were requested for this file, or if preprocessor output is needed
+ in addition to dependency information, this is an error.
+
+ Otherwise (outputting dependencies but not for this file, and not
+ using the preprocessor output), we can still produce correct output
+ so it's only a warning. */
+ if (CPP_OPTION (pfile, deps.style) == DEPS_NONE
+ || print_dep
+ || CPP_OPTION (pfile, deps.need_preprocessor_output))
+ cpp_errno (pfile, CPP_DL_FATAL, file->path);
else
- cpp_errno (pfile, CPP_DL_ERROR, file->path);
+ cpp_errno (pfile, CPP_DL_WARNING, file->path);
}
}
static struct file_hash_entry *
search_cache (struct file_hash_entry *head, const cpp_dir *start_dir)
{
- struct file_hash_entry *p;
-
- /* Look for a file that was found from a search starting at the
- given location. */
- for (p = head; p; p = p->next)
- if (p->start_dir == start_dir)
- return p;
- return 0;
+ while (head && head->start_dir != start_dir)
+ head = head->next;
+
+ return head;
}
/* Allocate a new _cpp_file structure. */
{
_cpp_file *file;
- file = xcalloc (1, sizeof (_cpp_file));
+ file = XCNEW (_cpp_file);
file->main_file = !pfile->buffer;
file->fd = -1;
file->dir = dir;
static void
destroy_cpp_file (_cpp_file *file)
{
- if (file->buffer)
- free ((void *) file->buffer);
+ free ((void *) file->buffer_start);
free ((void *) file->name);
free (file);
}
+/* Release all the files allocated by this reader. */
+static void
+destroy_all_cpp_files (cpp_reader *pfile)
+{
+ _cpp_file *iter = pfile->all_files;
+ while (iter)
+ {
+ _cpp_file *next = iter->next_file;
+ destroy_cpp_file (iter);
+ iter = next;
+ }
+}
+
/* A hash of directory names. The directory names are the path names
of files which contain a #include "", the included file name is
appended to this directories.
if (entry->start_dir == NULL)
return entry->u.dir;
- dir = xcalloc (1, sizeof (cpp_dir));
+ dir = XCNEW (cpp_dir);
dir->next = pfile->quote_include;
dir->name = (char *) dir_name;
dir->len = strlen (dir_name);
entry = new_file_hash_entry (pfile);
entry->next = *hash_slot;
entry->start_dir = NULL;
+ entry->location = pfile->line_table->highest_location;
entry->u.dir = dir;
*hash_slot = entry;
static void
allocate_file_hash_entries (cpp_reader *pfile)
{
- pfile->file_hash_entries_used = 0;
- pfile->file_hash_entries_allocated = 127;
- pfile->file_hash_entries = xmalloc
- (pfile->file_hash_entries_allocated * sizeof (struct file_hash_entry));
+ struct file_hash_entry_pool *pool = XNEW (struct file_hash_entry_pool);
+ pool->file_hash_entries_used = 0;
+ pool->next = pfile->file_hash_entries;
+ pfile->file_hash_entries = pool;
}
/* Return a new file hash entry. */
static struct file_hash_entry *
new_file_hash_entry (cpp_reader *pfile)
{
- if (pfile->file_hash_entries_used == pfile->file_hash_entries_allocated)
+ unsigned int idx;
+ if (pfile->file_hash_entries->file_hash_entries_used == FILE_HASH_POOL_SIZE)
allocate_file_hash_entries (pfile);
- return &pfile->file_hash_entries[pfile->file_hash_entries_used++];
+ idx = pfile->file_hash_entries->file_hash_entries_used++;
+ return &pfile->file_hash_entries->pool[idx];
+}
+
+/* Free the file hash entry pools. */
+static void
+free_file_hash_entries (cpp_reader *pfile)
+{
+ struct file_hash_entry_pool *iter = pfile->file_hash_entries;
+ while (iter)
+ {
+ struct file_hash_entry_pool *next = iter->next;
+ free (iter);
+ iter = next;
+ }
}
/* Returns TRUE if a file FNAME has ever been successfully opened.
{
struct file_hash_entry *entry;
- entry = htab_find_with_hash (pfile->file_hash, fname,
- htab_hash_string (fname));
+ entry = (struct file_hash_entry *)
+ htab_find_with_hash (pfile->file_hash, fname, htab_hash_string (fname));
while (entry && (entry->start_dir == NULL || entry->u.file->err_no))
entry = entry->next;
return entry != NULL;
}
+/* Returns TRUE if a file FNAME has ever been successfully opened
+ before LOCATION. This routine is not intended to correctly handle
+ filenames aliased by links or redundant . or .. traversals etc. */
+bool
+cpp_included_before (cpp_reader *pfile, const char *fname,
+ source_location location)
+{
+ struct file_hash_entry *entry;
+
+ entry = (struct file_hash_entry *)
+ htab_find_with_hash (pfile->file_hash, fname, htab_hash_string (fname));
+
+ while (entry && (entry->start_dir == NULL || entry->u.file->err_no
+ || entry->location > location))
+ entry = entry->next;
+
+ return entry != NULL;
+}
+
/* Calculate the hash value of a file hash entry P. */
static hashval_t
else
hname = entry->u.dir->name;
- return strcmp (hname, fname) == 0;
+ return filename_cmp (hname, fname) == 0;
+}
+
+/* Compare entries in the nonexistent file hash table. These are just
+ strings. */
+static int
+nonexistent_file_hash_eq (const void *p, const void *q)
+{
+ return filename_cmp ((const char *) p, (const char *) q) == 0;
}
/* Initialize everything in this source file. */
pfile->dir_hash = htab_create_alloc (127, file_hash_hash, file_hash_eq,
NULL, xcalloc, free);
allocate_file_hash_entries (pfile);
+ pfile->nonexistent_file_hash = htab_create_alloc (127, htab_hash_string,
+ nonexistent_file_hash_eq,
+ NULL, xcalloc, free);
+ _obstack_begin (&pfile->nonexistent_file_ob, 0, 0,
+ (void *(*) (long)) xmalloc,
+ (void (*) (void *)) free);
}
/* Finalize everything in this source file. */
{
htab_delete (pfile->file_hash);
htab_delete (pfile->dir_hash);
+ htab_delete (pfile->nonexistent_file_hash);
+ obstack_free (&pfile->nonexistent_file_ob, 0);
+ free_file_hash_entries (pfile);
+ destroy_all_cpp_files (pfile);
+}
+
+/* Make the parser forget about files it has seen. This can be useful
+ for resetting the parser to start another run. */
+void
+cpp_clear_file_cache (cpp_reader *pfile)
+{
+ _cpp_cleanup_files (pfile);
+ pfile->file_hash_entries = NULL;
+ pfile->all_files = NULL;
+ _cpp_init_files (pfile);
}
/* Enter a file name in the hash for the sake of cpp_included. */
void
_cpp_fake_include (cpp_reader *pfile, const char *fname)
{
- _cpp_find_file (pfile, fname, pfile->buffer->file->dir, true);
+ _cpp_find_file (pfile, fname, pfile->buffer->file->dir, true, 0);
}
/* Not everyone who wants to set system-header-ness on a buffer can
{
int flags = 0;
const struct line_maps *line_table = pfile->line_table;
- const struct line_map *map = &line_table->maps[line_table->used-1];
-
+ const struct line_map *map = LINEMAPS_LAST_ORDINARY_MAP (line_table);
/* 1 = system header, 2 = system header to be treated as C. */
if (syshdr)
flags = 1 + (externc != 0);
pfile->buffer->sysp = flags;
- _cpp_do_file_change (pfile, LC_RENAME, map->to_file,
+ _cpp_do_file_change (pfile, LC_RENAME, ORDINARY_MAP_FILE_NAME (map),
SOURCE_LINE (map, pfile->line_table->highest_line), flags);
}
_cpp_do_file_change (pfile, reason, new_name, 1, 0);
}
+struct report_missing_guard_data
+{
+ const char **paths;
+ size_t count;
+};
+
/* Callback function for htab_traverse. */
static int
-report_missing_guard (void **slot, void *b)
+report_missing_guard (void **slot, void *d)
{
struct file_hash_entry *entry = (struct file_hash_entry *) *slot;
- int *bannerp = (int *) b;
+ struct report_missing_guard_data *data
+ = (struct report_missing_guard_data *) d;
/* Skip directories. */
if (entry->start_dir != NULL)
_cpp_file *file = entry->u.file;
/* We don't want MI guard advice for the main file. */
- if (file->cmacro == NULL && file->stack_count == 1 && !file->main_file)
+ if (!file->once_only && file->cmacro == NULL
+ && file->stack_count == 1 && !file->main_file)
{
- if (*bannerp == 0)
+ if (data->paths == NULL)
{
- fputs (_("Multiple include guards may be useful for:\n"),
- stderr);
- *bannerp = 1;
+ data->paths = XCNEWVEC (const char *, data->count);
+ data->count = 0;
}
- fputs (entry->u.file->path, stderr);
- putc ('\n', stderr);
+ data->paths[data->count++] = file->path;
}
}
- return 0;
+ /* Keep traversing the hash table. */
+ return 1;
+}
+
+/* Comparison function for qsort. */
+static int
+report_missing_guard_cmp (const void *p1, const void *p2)
+{
+ return strcmp (*(const char *const *) p1, *(const char *const *) p2);
}
/* Report on all files that might benefit from a multiple include guard.
void
_cpp_report_missing_guards (cpp_reader *pfile)
{
- int banner = 0;
+ struct report_missing_guard_data data;
+
+ data.paths = NULL;
+ data.count = htab_elements (pfile->file_hash);
+ htab_traverse (pfile->file_hash, report_missing_guard, &data);
- htab_traverse (pfile->file_hash, report_missing_guard, &banner);
+ if (data.paths != NULL)
+ {
+ size_t i;
+
+ /* Sort the paths to avoid outputting them in hash table
+ order. */
+ qsort (data.paths, data.count, sizeof (const char *),
+ report_missing_guard_cmp);
+ fputs (_("Multiple include guards may be useful for:\n"),
+ stderr);
+ for (i = 0; i < data.count; i++)
+ {
+ fputs (data.paths[i], stderr);
+ putc ('\n', stderr);
+ }
+ free (data.paths);
+ }
}
/* Locate HEADER, and determine whether it is newer than the current
if (!dir)
return -1;
- file = _cpp_find_file (pfile, fname, dir, false);
+ file = _cpp_find_file (pfile, fname, dir, false, angle_brackets);
if (file->err_no)
return -1;
/* Invalidate control macros in the #including file. */
pfile->mi_valid = false;
- if (file->buffer)
+ if (file->buffer_start)
{
- free ((void *) file->buffer);
+ free ((void *) file->buffer_start);
+ file->buffer_start = NULL;
file->buffer = NULL;
+ file->buffer_valid = false;
}
}
+/* Return the file name associated with FILE. */
+const char *
+_cpp_get_file_name (_cpp_file *file)
+{
+ return file->name;
+}
+
+/* Inteface to file statistics record in _cpp_file structure. */
+struct stat *
+_cpp_get_file_stat (_cpp_file *file)
+{
+ return &file->st;
+}
+
/* Set the include chain for "" to QUOTE, for <> to BRACKET. If
QUOTE_IGNORES_SOURCE_DIR, then "" includes do not look in the
directory of the including file.
dlen = dir->len;
flen = strlen (fname);
- path = xmalloc (dlen + 1 + flen + 1);
+ path = XNEWVEC (char, dlen + 1 + flen + 1);
memcpy (path, dir->name, dlen);
- if (dlen && path[dlen - 1] != '/')
+ if (dlen && !IS_DIR_SEPARATOR (path[dlen - 1]))
path[dlen++] = '/';
memcpy (&path[dlen], fname, flen + 1);
int len;
len = 20;
- set = alloc = xmalloc (len + 1);
+ set = alloc = XNEWVEC (char, len + 1);
if (! is_space (ch))
{
*set++ = ch;
if (set - alloc == len)
{
len *= 2;
- alloc = xrealloc (alloc, len + 1);
+ alloc = XRESIZEVEC (char, alloc, len + 1);
set = alloc + len / 2;
}
*set++ = ch;
size_t len, count = 0, room = 9;
len = dir->len;
- name = alloca (len + sizeof (FILE_NAME_MAP_FILE) + 1);
+ name = (char *) alloca (len + sizeof (FILE_NAME_MAP_FILE) + 1);
memcpy (name, dir->name, len);
- if (len && name[len - 1] != '/')
+ if (len && !IS_DIR_SEPARATOR (name[len - 1]))
name[len++] = '/';
strcpy (name + len, FILE_NAME_MAP_FILE);
f = fopen (name, "r");
- dir->name_map = xmalloc (room * sizeof (char *));
+ dir->name_map = XNEWVEC (const char *, room);
/* Silently return NULL if we cannot open. */
if (f)
if (count + 2 > room)
{
room += 8;
- dir->name_map = xrealloc (dir->name_map, room * sizeof (char *));
+ dir->name_map = XRESIZEVEC (const char *, dir->name_map, room);
}
dir->name_map[count] = read_filename_string (ch, f);
read_name_map (dir);
for (index = 0; dir->name_map[index]; index += 2)
- if (!strcmp (dir->name_map[index], fname))
+ if (!filename_cmp (dir->name_map[index], fname))
return xstrdup (dir->name_map[index + 1]);
-
+ if (IS_ABSOLUTE_PATH (fname))
+ return NULL;
p = strchr (fname, '/');
+#ifdef HAVE_DOS_BASED_FILE_SYSTEM
+ {
+ char *p2 = strchr (fname, '\\');
+ if (!p || (p > p2))
+ p = p2;
+ }
+#endif
if (!p || p == fname)
return NULL;
len = dir->len + (p - fname + 1);
- new_dir = xmalloc (len + 1);
+ new_dir = XNEWVEC (char, len + 1);
memcpy (new_dir, dir->name, dir->len);
memcpy (new_dir + dir->len, fname, p - fname + 1);
new_dir[len] = '\0';
that's OK. The code does rely on having entries with the same size
next to each other. */
+struct pchf_entry {
+ /* The size of this file. This is used to save running a MD5 checksum
+ if the sizes don't match. */
+ off_t size;
+ /* The MD5 checksum of this file. */
+ unsigned char sum[16];
+ /* Is this file to be included only once? */
+ bool once_only;
+};
+
struct pchf_data {
/* Number of pchf_entry structures. */
size_t count;
the structure if we're processing a regular #include. */
bool have_once_only;
- struct pchf_entry {
- /* The size of this file. This is used to save running a MD5 checksum
- if the sizes don't match. */
- off_t size;
- /* The MD5 checksum of this file. */
- unsigned char sum[16];
- /* Is this file to be included only once? */
- bool once_only;
- } entries[1];
+ struct pchf_entry entries[1];
};
static struct pchf_data *pchf;
-/* Data for pchf_addr. */
-struct pchf_adder_info
+/* A qsort ordering function for pchf_entry structures. */
+
+static int
+pchf_save_compare (const void *e1, const void *e2)
{
- cpp_reader *pfile;
- struct pchf_data *d;
-};
+ return memcmp (e1, e2, sizeof (struct pchf_entry));
+}
-/* A hash traversal function to add entries into DATA->D. */
+/* Create and write to F a pchf_data structure. */
-static int
-pchf_adder (void **slot, void *data)
+bool
+_cpp_save_file_entries (cpp_reader *pfile, FILE *fp)
{
- struct file_hash_entry *h = (struct file_hash_entry *) *slot;
- struct pchf_adder_info *i = (struct pchf_adder_info *) data;
+ size_t count = 0;
+ struct pchf_data *result;
+ size_t result_size;
+ _cpp_file *f;
+
+ for (f = pfile->all_files; f; f = f->next_file)
+ ++count;
+
+ result_size = (sizeof (struct pchf_data)
+ + sizeof (struct pchf_entry) * (count - 1));
+ result = XCNEWVAR (struct pchf_data, result_size);
+
+ result->count = 0;
+ result->have_once_only = false;
- if (h->start_dir != NULL && h->u.file->stack_count != 0)
+ for (f = pfile->all_files; f; f = f->next_file)
{
- struct pchf_data *d = i->d;
- _cpp_file *f = h->u.file;
- size_t count = d->count++;
+ size_t count;
/* This should probably never happen, since if a read error occurred
the PCH file shouldn't be written... */
if (f->dont_read || f->err_no)
- return 1;
+ continue;
+
+ if (f->stack_count == 0)
+ continue;
+
+ count = result->count++;
- d->entries[count].once_only = f->once_only;
+ result->entries[count].once_only = f->once_only;
/* |= is avoided in the next line because of an HP C compiler bug */
- d->have_once_only = d->have_once_only | f->once_only;
+ result->have_once_only = result->have_once_only | f->once_only;
if (f->buffer_valid)
- md5_buffer ((const char *)f->buffer,
- f->st.st_size, d->entries[count].sum);
+ md5_buffer ((const char *)f->buffer,
+ f->st.st_size, result->entries[count].sum);
else
{
FILE *ff;
if (!open_file (f))
{
- open_file_failed (i->pfile, f);
- return 0;
+ open_file_failed (pfile, f, 0);
+ return false;
}
ff = fdopen (f->fd, "rb");
- md5_stream (ff, d->entries[count].sum);
+ md5_stream (ff, result->entries[count].sum);
fclose (ff);
f->fd = oldfd;
}
- d->entries[count].size = f->st.st_size;
+ result->entries[count].size = f->st.st_size;
}
- return 1;
-}
-
-/* A qsort ordering function for pchf_entry structures. */
-
-static int
-pchf_save_compare (const void *e1, const void *e2)
-{
- return memcmp (e1, e2, sizeof (struct pchf_entry));
-}
-
-/* Create and write to F a pchf_data structure. */
-
-bool
-_cpp_save_file_entries (cpp_reader *pfile, FILE *f)
-{
- size_t count = 0;
- struct pchf_data *result;
- size_t result_size;
- struct pchf_adder_info pai;
-
- count = htab_elements (pfile->file_hash);
- result_size = (sizeof (struct pchf_data)
- + sizeof (struct pchf_entry) * (count - 1));
- result = xcalloc (result_size, 1);
-
- result->count = 0;
- result->have_once_only = false;
-
- pai.pfile = pfile;
- pai.d = result;
- htab_traverse (pfile->file_hash, pchf_adder, &pai);
result_size = (sizeof (struct pchf_data)
+ sizeof (struct pchf_entry) * (result->count - 1));
qsort (result->entries, result->count, sizeof (struct pchf_entry),
pchf_save_compare);
- return fwrite (result, result_size, 1, f) == 1;
+ return fwrite (result, result_size, 1, fp) == 1;
}
/* Read the pchf_data structure from F. */
!= 1)
return false;
- pchf = xmalloc (sizeof (struct pchf_data)
+ pchf = XNEWVAR (struct pchf_data, sizeof (struct pchf_data)
+ sizeof (struct pchf_entry) * (d.count - 1));
memcpy (pchf, &d, sizeof (struct pchf_data) - sizeof (struct pchf_entry));
if (fread (pchf->entries, sizeof (struct pchf_entry), d.count, f)
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