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Look for include files in the directory of the including file.

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Looking in the diretory dtc is invoked from is not very useful behavior.

As part of the code reorganization to implement this, I removed the
uniquifying of name storage -- it seemed a rather dubious optimization
given likely usage, and some aspects of it would have been mildly awkward
to integrate with the new code.

Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Scott Wood 2008-01-03 17:43:31 -06:00 • committed by Jon Loeliger
parent f77fe6a20e
commit 910efac4b4
5 changed files with 136 additions and 102 deletions
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130
srcpos.c
View file

@ -20,86 +20,94 @@
#include "dtc.h"
#include "srcpos.h"
/*
* Record the complete unique set of opened file names.
* Primarily used to cache source position file names.
*/
#define MAX_N_FILE_NAMES (100)
const char *file_names[MAX_N_FILE_NAMES];
static int n_file_names = 0;
/*
* Like yylineno, this is the current open file pos.
*/
int srcpos_filenum = -1;
struct dtc_file *srcpos_file;
FILE *dtc_open_file(const char *fname)
static int dtc_open_one(struct dtc_file *file,
const char *search,
const char *fname)
{
FILE *f;
char *fullname;
if (lookup_file_name(fname, 1) < 0)
die("Too many files opened\n");
if (search) {
fullname = malloc(strlen(search) + strlen(fname) + 2);
if (!fullname)
die("Out of memory\n");
if (streq(fname, "-"))
f = stdin;
else
f = fopen(fname, "r");
if (! f)
die("Couldn't open \"%s\": %s\n", fname, strerror(errno));
return f;
}
/*
* Locate and optionally add filename fname in the file_names[] array.
*
* If the filename is currently not in the array and the boolean
* add_it is non-zero, an attempt to add the filename will be made.
*
* Returns;
* Index [0..MAX_N_FILE_NAMES) where the filename is kept
* -1 if the name can not be recorded
*/
int lookup_file_name(const char *fname, int add_it)
{
int i;
for (i = 0; i < n_file_names; i++) {
if (strcmp(file_names[i], fname) == 0)
return i;
strcpy(fullname, search);
strcat(fullname, "/");
strcat(fullname, fname);
} else {
fullname = strdup(fname);
}
if (add_it) {
if (n_file_names < MAX_N_FILE_NAMES) {
file_names[n_file_names] = strdup(fname);
return n_file_names++;
}
file->file = fopen(fullname, "r");
if (!file->file) {
free(fullname);
return 0;
}
return -1;
file->name = fullname;
return 1;
}
const char *srcpos_filename_for_num(int filenum)
struct dtc_file *dtc_open_file(const char *fname,
const struct search_path *search)
{
if (0 <= filenum && filenum < n_file_names) {
return file_names[filenum];
static const struct search_path default_search = { NULL, NULL, NULL };
struct dtc_file *file;
const char *slash;
file = malloc(sizeof(struct dtc_file));
if (!file)
die("Out of memory\n");
slash = strrchr(fname, '/');
if (slash) {
char *dir = malloc(slash - fname + 1);
if (!dir)
die("Out of memory\n");
memcpy(dir, fname, slash - fname);
dir[slash - fname] = 0;
file->dir = dir;
} else {
file->dir = NULL;
}
return 0;
if (streq(fname, "-")) {
file->name = "stdin";
file->file = stdin;
return file;
}
if (!search)
search = &default_search;
while (search) {
if (dtc_open_one(file, search->dir, fname))
return file;
if (errno != ENOENT)
goto out;
search = search->next;
}
out:
free(file);
return NULL;
}
const char *srcpos_get_filename(void)
void dtc_close_file(struct dtc_file *file)
{
return srcpos_filename_for_num(srcpos_filenum);
if (fclose(file->file))
die("Error closing \"%s\": %s\n", file->name, strerror(errno));
free(file);
}