-/* src/common/readwrite.c */
+/* src/common/readwrite.c
+ *
+ * This file is part of PlomRogue. PlomRogue is licensed under the GPL version 3
+ * or any later version. For details on its copyright, license, and warranties,
+ * see the file NOTICE in the root directory of the PlomRogue source package.
+ */
#include "readwrite.h"
-#include <stddef.h> /* size_t */
+#include <stddef.h> /* NULL, size_t */
#include <stdint.h> /* uint8_t, uint16_t, uint32_t, UINT32_MAX */
#include <stdio.h> /* FILE, fseek(), sprintf(), fgets(), fgetc(), ferror(),
* fputc(), fwrite(), fclose(), fopen(), clearerr()
*/
#include <stdlib.h> /* free() */
-#include <string.h> /* strlen() */
+#include <string.h> /* strlen(), memcpy(), strchr() */
#include <unistd.h> /* access(), unlink() */
#include "rexit.h" /* exit_err(), exit_trouble() */
#include "try_malloc.h" /* try_malloc() */
-/* Return "path" + suffix "_tmp". Value is malloc'd, must be free externally. */
-static char * build_temp_path(char * path);
-
-
-
-static char * build_temp_path(char * path)
-{
- char * f_name = "build_temp_path";
- char * suffix_tmp = "_tmp";
- uint16_t size = strlen(path) + strlen(suffix_tmp) + 1;
- char * path_tmp = try_malloc(size, f_name);
- int test = sprintf(path_tmp, "%s%s", path, suffix_tmp);
- exit_trouble(test < 0, f_name, "sprintf()");
- return path_tmp;
-}
-
-
-
-extern FILE * try_fopen(char * path, char * mode, char * f)
+extern FILE * try_fopen(char * path, char * mode, const char * f)
{
- char * f_name = "try_fopen()";
char * msg1 = "Trouble in ";
- char * msg2 = " with fopen() (mode '";
+ char * msg2 = " with fopen (mode '";
char * msg3 = "') on path '";
char * msg4 = "'.";
uint16_t size = strlen(msg1) + strlen(msg2) + strlen(msg3) + strlen(msg4)
+ strlen(f) + strlen(path) + strlen(mode) + 1;
- char * msg = try_malloc(size, f_name);
+ char * msg = try_malloc(size, __func__);
int test = sprintf(msg, "%s%s%s%s%s%s%s", msg1,f,msg2,mode,msg3,path,msg4);
- exit_trouble(test < 0, f_name, "sprintf()");
+ exit_trouble(test < 0, __func__, "sprintf");
FILE * file_p = fopen(path, mode);
- exit_err(NULL == file_p, msg);
+ exit_err(!file_p, msg);
free(msg);
return file_p;
}
-extern void try_fclose(FILE * file, char * f)
+extern void try_fclose(FILE * file, const char * f)
{
- exit_trouble(fclose(file), f, "fclose()");
+ exit_trouble(fclose(file), f, "fclose");
}
extern void try_fwrite(void * ptr, size_t size, size_t nmemb, FILE * stream,
- char * f)
+ const char * f)
{
- exit_trouble(0 == fwrite(ptr, size, nmemb, stream), f, "fwrite()");
+ exit_trouble(0 == fwrite(ptr, size, nmemb, stream), f, "fwrite");
}
-extern void try_fputc(uint8_t c, FILE * file, char * f)
+extern void try_fputc(uint8_t c, FILE * file, const char * f)
{
- exit_trouble(EOF == fputc(c, file), f, "fputc()");
+ exit_trouble(EOF == fputc(c, file), f, "fputc");
}
-extern int try_fgetc(FILE * file, char * f)
+extern int try_fgetc(FILE * file, const char * f)
{
clearerr(file); /* OSX' (BSD?) fgetc() needs this to undo previous EOFs. */
int test = fgetc(file);
- exit_trouble(EOF == test && ferror(file), f, "fgetc()");
+ exit_trouble(EOF == test && ferror(file), f, "fgetc");
return test;
}
-extern char * try_fgets(char * line, int linemax, FILE * file, char * f)
+extern char * try_fgets(char * line, int linemax, FILE * file, const char * f)
{
char * test = fgets(line, linemax, file);
- exit_trouble(NULL == test && ferror(file), f, "fgets()");
+ exit_trouble(!test && ferror(file), f, "fgets");
return test;
}
+extern char * build_temp_path(char * path)
+{
+ char * suffix_tmp = "_tmp";
+ uint16_t size = strlen(path) + strlen(suffix_tmp) + 1;
+ char * path_tmp = try_malloc(size, __func__);
+ int test = sprintf(path_tmp, "%s%s", path, suffix_tmp);
+ exit_trouble(test < 0, __func__, "sprintf");
+ return path_tmp;
+}
+
+
+
extern FILE * atomic_write_start(char * path, char ** path_tmp)
{
- char * f_name = "atomic_write_start()";
*path_tmp = build_temp_path(path);
- return try_fopen(*path_tmp, "w", f_name);
+ return try_fopen(*path_tmp, "w", __func__);
}
extern void atomic_write_finish(FILE * file, char * path, char * path_tmp)
{
- char * f_name = "atomic_write_finish()";
- try_fclose(file, f_name);
+ try_fclose(file, __func__);
char * msg1 = "Trouble in ";
char * msg4 = "'.";
if (!access(path, F_OK))
{
- char * msg2 = " with unlink() on path '";
+ char * msg2 = " with unlink on path '";
uint16_t size = strlen(msg1) + strlen(msg2) + strlen(msg4)
- + strlen(f_name) + strlen(path) + 1;
- char * msg = try_malloc(size, f_name);
- int test = sprintf(msg, "%s%s%s%s%s", msg1, f_name, msg2, path, msg4);
- exit_trouble(test < 0, f_name, "sprintf()");
+ + strlen(__func__) + strlen(path) + 1;
+ char * msg = try_malloc(size, __func__);
+ int test = sprintf(msg, "%s%s%s%s%s", msg1, __func__, msg2, path, msg4);
+ exit_trouble(test < 0, __func__, "sprintf");
exit_err(unlink(path), msg);
free(msg);
}
- char * msg2 = " with rename() from '";
+ char * msg2 = " with rename from '";
char * msg3 = "' to '";
- uint16_t size = strlen(msg1) + strlen(f_name) + strlen(msg2) +
+ uint16_t size = strlen(msg1) + strlen(__func__) + strlen(msg2) +
+ strlen(path_tmp) + strlen(msg3) + strlen(path)
+ strlen(msg4) + 1;
- char * msg = try_malloc(size, f_name);
+ char * msg = try_malloc(size, __func__);
int test = sprintf(msg, "%s%s%s%s%s%s%s",
- msg1, f_name, msg2, path_tmp, msg3, path, msg4);
- exit_trouble(test < 0, f_name, "sprintf()");
+ msg1, __func__, msg2, path_tmp, msg3, path, msg4);
+ exit_trouble(test < 0, __func__, "sprintf");
exit_err(rename(path_tmp, path), msg);
free(msg);
free(path_tmp);
extern void detect_atomic_leftover(char * path)
{
- char * f_name = "detect_atomic_leftover()";
char * path_tmp = build_temp_path(path);
char * part1 = "Found file '";
char * part2 = "' that may be a leftover from an aborted previous attempt "
char * part3 = "'. Aborting until the matter is solved by (re-)moving it.";
uint32_t size = strlen(part1) + strlen(path_tmp) + strlen(part2)
+ strlen(path) + strlen(part3) + 1;
- char * msg = try_malloc(size, f_name);
+ char * msg = try_malloc(size, __func__);
int test = sprintf(msg, "%s%s%s%s%s", part1, path_tmp, part2, path, part3);
- exit_trouble(test < 0, f_name, "sprintf()");
+ exit_trouble(test < 0, __func__, "sprintf");
exit_err(!access(path_tmp, F_OK), msg);
free(msg);
free(path_tmp);
extern uint32_t textfile_width(FILE * file)
{
- char * f_name = "textfile_width()";
int c = 0;
uint32_t c_count = 0;
uint32_t linemax = 0;
while (1)
{
- c = try_fgetc(file, f_name);
+ c = try_fgetc(file, __func__);
if (EOF == c)
{
break;
}
c_count++;
- exit_trouble(UINT32_MAX == c_count, f_name, "too large text file line");
+ exit_trouble(UINT32_MAX==c_count, __func__, "too large text file line");
if ('\n' == c)
{
if (c_count > linemax)
{ /* line / lack newline chars. */
linemax = c_count;
}
- exit_trouble(-1 == fseek(file, 0, SEEK_SET), f_name, "fseek()");
+ exit_trouble(-1 == fseek(file, 0, SEEK_SET), __func__, "fseek");
return linemax;
}
+
+
+
+extern uint8_t read_file_into_queue(FILE * file, char ** queue)
+{
+ uint8_t ret = 0;
+ int test;
+ while (EOF != (test = try_fgetc(file, __func__)))
+ {
+ ret = 1;
+ if ('\0' != test)
+ {
+ if (*queue)
+ {
+ char * new_queue = try_malloc(strlen(*queue) + 1 + 1, __func__);
+ memcpy(new_queue, *queue, strlen(*queue));
+ new_queue[strlen(*queue)] = (char) test;
+ new_queue[strlen(*queue) + 1] = '\0';
+ free(*queue);
+ *queue = new_queue;
+ }
+ else
+ {
+ *queue = try_malloc(1 + 1, __func__);
+ (*queue)[0] = (char) test;
+ (*queue)[1] = '\0';
+ }
+ }
+ }
+ return ret;
+}
+
+
+
+extern char * get_message_from_queue(char ** queue)
+{
+ if (!(*queue))
+ {
+ return NULL;
+ }
+ char * first_nl = strchr(*queue, '\n');
+ if (!first_nl)
+ {
+ return NULL;
+ }
+ char * msg = try_malloc(first_nl - (*queue) + 1, __func__);
+ memcpy(msg, *queue, first_nl - (*queue));
+ msg[first_nl - (*queue)] = '\0';
+ char * new_queue = try_malloc(strlen(first_nl + 1) + 1, __func__);
+ memcpy(new_queue, first_nl + 1, strlen(first_nl + 1) + 1);
+ free(*queue);
+ *queue = new_queue;
+ return msg;
+}
projects / plomrogue / blobdiff