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#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <errno.h>
#include "dive.h"
struct memblock {
void *buffer;
size_t size;
};
static int readfile(const char *filename, struct memblock *mem)
{
int ret, fd = open(filename, O_RDONLY);
struct stat st;
mem->buffer = NULL;
mem->size = 0;
fd = open(filename, O_RDONLY);
if (fd < 0)
return fd;
ret = fstat(fd, &st);
if (ret < 0)
goto out;
ret = -EINVAL;
if (!S_ISREG(st.st_mode))
goto out;
ret = 0;
if (!st.st_size)
goto out;
mem->buffer = malloc(st.st_size);
ret = -1;
errno = ENOMEM;
if (!mem->buffer)
goto out;
mem->size = st.st_size;
ret = read(fd, mem->buffer, mem->size);
if (ret < 0)
goto free;
if (ret == mem->size)
goto out;
errno = EIO;
ret = -1;
free:
free(mem->buffer);
mem->buffer = NULL;
mem->size = 0;
out:
close(fd);
return ret;
}
void parse_file(const char *filename, GError **error)
{
struct memblock mem;
if (readfile(filename, &mem) < 0) {
fprintf(stderr, "Failed to read '%s'.\n", filename);
if (error) {
*error = g_error_new(g_quark_from_string("subsurface"),
DIVE_ERROR_PARSE,
"Failed to read '%s'",
filename);
}
return;
}
parse_xml_buffer(filename, mem.buffer, mem.size, error);
free(mem.buffer);
}
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