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-rw-r--r--src/mds-kbdc/make-tree.c21
-rw-r--r--src/mds-kbdc/parse-error.c6
-rw-r--r--src/mds-kbdc/paths.c168
-rw-r--r--src/mds-kbdc/paths.h49
4 files changed, 226 insertions, 18 deletions
diff --git a/src/mds-kbdc/make-tree.c b/src/mds-kbdc/make-tree.c
index a8f20ee..989cd2b 100644
--- a/src/mds-kbdc/make-tree.c
+++ b/src/mds-kbdc/make-tree.c
@@ -17,6 +17,8 @@
*/
#include "make-tree.h"
+#include "paths.h"
+
#include <limits.h>
#include <stdlib.h>
#include <libgen.h>
@@ -711,32 +713,18 @@ static mds_kbdc_parse_error_t* error;
*/
static int get_pathname(const char* restrict filename, state_t* restrict state)
{
- size_t cwd_size = 4096 >> 1;
char* cwd = NULL;
- char* old = NULL;
int saved_errno;
/* Get a non-relative pathname for the file, relative filenames
* can be misleading as the program can have changed working
* directory to be able to resolve filenames. */
- parsing_result->pathname = realpath(filename, NULL); /* XXX use absolute path */
+ parsing_result->pathname = abspath(filename);
if (parsing_result->pathname == NULL)
{
fail_if (errno != ENOENT);
saved_errno = errno;
-
- /* Get the current working directory. */
- /* glibc offers ways to do this in just one function call,
- * but we will not assume that glibc is used here. */
- for (;;)
- {
- fail_if (xxrealloc(old, cwd, cwd_size <<= 1, char));
- if (getcwd(cwd, cwd_size))
- break;
- else
- fail_if (errno != ERANGE);
- }
-
+ fail_if ((cwd = curpath(), cwd == NULL));
parsing_result->pathname = strdup(filename);
fail_if (parsing_result->pathname == NULL);
NEW_ERROR_(parsing_result, ERROR, 0, 0, 0, 0, 1, "no such file or directory in ‘%s’", cwd);
@@ -758,7 +746,6 @@ static int get_pathname(const char* restrict filename, state_t* restrict state)
pfail:
saved_errno = errno;
free(cwd);
- free(old);
return errno = saved_errno, -1;
}
diff --git a/src/mds-kbdc/parse-error.c b/src/mds-kbdc/parse-error.c
index 92e5ab0..f7db9ad 100644
--- a/src/mds-kbdc/parse-error.c
+++ b/src/mds-kbdc/parse-error.c
@@ -17,6 +17,8 @@
*/
#include "parse-error.h"
+#include "paths.h"
+
#include <stdlib.h>
#include <alloca.h>
#include <string.h>
@@ -34,6 +36,7 @@ static void print(const mds_kbdc_parse_error_t* restrict this, FILE* restrict ou
{
size_t i, n, start = 0, end = 0;
const char* restrict code = this->code;
+ char* restrict path = relpath(this->pathname, NULL);
/* Convert bytes count to character count for the code position. */
for (i = 0, n = this->start; i < n; i++)
@@ -45,7 +48,8 @@ static void print(const mds_kbdc_parse_error_t* restrict this, FILE* restrict ou
end += start;
/* Print error information. */
- fprintf(output, "\033[01m%s\033[21m:", this->pathname); /* TODO should be relative to the current dir */
+ fprintf(output, "\033[01m%s\033[21m:", path ? path : this->pathname);
+ free(path);
if (this->error_is_in_file)
fprintf(output, "%zu:%zu–%zu:", this->line + 1, start, end);
switch (this->severity)
diff --git a/src/mds-kbdc/paths.c b/src/mds-kbdc/paths.c
new file mode 100644
index 0000000..d66ae99
--- /dev/null
+++ b/src/mds-kbdc/paths.c
@@ -0,0 +1,168 @@
+/**
+ * mds — A micro-display server
+ * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+#include "paths.h"
+
+#include <libmdsserver/macros.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+
+/**
+ * Get the current working directory
+ *
+ * @return The current working directory
+ */
+char* curpath(void)
+{
+ static size_t cwd_size = 4096 >> 1;
+ char* cwd = NULL;
+ char* old = NULL;
+ int saved_errno;
+
+ /* glibc offers ways to do this in just one function call,
+ * but we will not assume that glibc is used here. */
+ for (;;)
+ {
+ fail_if (xxrealloc(old, cwd, (cwd_size <<= 1) + 1, char));
+ if (getcwd(cwd, cwd_size))
+ break;
+ else
+ fail_if (errno != ERANGE);
+ }
+
+ return cwd;
+ pfail:
+ saved_errno = errno;
+ free(old);
+ free(cwd);
+ errno = saved_errno;
+ return NULL;
+}
+
+
+/**
+ * Get the absolute path of a file
+ *
+ * @param path The filename of the file
+ * @return The file's absolute path, `NULL` on error
+ */
+char* abspath(const char* path)
+{
+ char* cwd = NULL;
+ char* buf = NULL;
+ int saved_errno, slash = 1;
+ size_t size, p;
+
+ if (*path == '/')
+ return strdup(path);
+
+ fail_if ((cwd = curpath(), cwd == NULL));
+ size = (p = strlen(cwd)) + strlen(path) + 2;
+ fail_if (xmalloc(buf, size + 1, char));
+ memcpy(buf, cwd, (p + 1) * sizeof(char));
+ if (buf[p - 1] != '/')
+ buf[p++] = '/';
+
+ while (*path)
+ if (slash && (path[0] == '/'))
+ path += 1;
+ else if (slash && (path[0] == '.') && (path[1] == '/'))
+ path += 2;
+ else if (slash && (path[0] == '.') && (path[1] == '.') && (path[2] == '/'))
+ {
+ path += 3;
+ p--;
+ while (p && (buf[--p] != '/'));
+ p++;
+ }
+ else
+ {
+ buf[p++] = *path;
+ slash = (*path++ == '/');
+ }
+
+ buf[p] = '\0';
+
+ free(cwd);
+ return buf;
+ pfail:
+ saved_errno = errno;
+ free(cwd);
+ errno = saved_errno;
+ return NULL;
+}
+
+
+/**
+ * Get a relative path of a file
+ *
+ * @param path The filename of the file
+ * @param base The pathname of the base directory,
+ * `NULL` for the current working directroy
+ * @return The file's relative path, `NULL` on error
+ */
+char* relpath(const char* path, const char* base)
+{
+ char* abs = abspath(path);
+ char* absbase = NULL;
+ char* buf = NULL;
+ char* old = NULL;
+ int saved_errno;
+ size_t p, slash = 1, back = 0;
+
+ fail_if (abs == NULL);
+ absbase = base ? abspath(base) : curpath();
+ fail_if (absbase == NULL);
+
+ if (absbase[strlen(absbase) - 1] != '/')
+ /* Both `abspath` and `curpath` (and `relpath`) allocates one extra slot. */
+ absbase[strlen(absbase) + 1] = '\0', absbase[strlen(absbase)] = '/';
+
+ fprintf(stderr, "abs: %s\n", abs);
+ fprintf(stderr, "absbase: %s\n\n", absbase);
+
+ for (p = 1; abs[p] && absbase[p] && (abs[p] == absbase[p]); p++)
+ if (abs[p] == '/')
+ slash = p + 1;
+
+ for (p = slash; absbase[p]; p++)
+ if (absbase[p] == '/')
+ back++;
+
+ fail_if (xmalloc(buf, back * 3 + strlen(abs + slash) + 2, char));
+
+ for (p = 0; back--;)
+ buf[p++] = '.', buf[p++] = '.', buf[p++] = '/';
+ memcpy(buf + p, abs + slash, (strlen(abs + slash) + 1) * sizeof(char));
+
+ free(abs);
+ free(absbase);
+ return buf;
+ pfail:
+ saved_errno = errno;
+ free(abs);
+ free(absbase);
+ free(old);
+ errno = saved_errno;
+ return NULL;
+}
+
diff --git a/src/mds-kbdc/paths.h b/src/mds-kbdc/paths.h
new file mode 100644
index 0000000..a045334
--- /dev/null
+++ b/src/mds-kbdc/paths.h
@@ -0,0 +1,49 @@
+/**
+ * mds — A micro-display server
+ * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef MDS_MDS_KBDC_PATHS_H
+#define MDS_MDS_KBDC_PATHS_H
+
+
+/**
+ * Get the current working directory
+ *
+ * @return The current working directory
+ */
+char* curpath(void);
+
+/**
+ * Get the absolute path of a file
+ *
+ * @param path The filename of the file
+ * @return The file's absolute path, `NULL` on error
+ */
+char* abspath(const char* path);
+
+/**
+ * Get a relative path of a file
+ *
+ * @param path The filename of the file
+ * @param base The pathname of the base directory,
+ * `NULL` for the current working directroy
+ * @return The file's relative path, `NULL` on error
+ */
+char* relpath(const char* path, const char* base);
+
+
+#endif
+
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