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4d10bc017a
We're going to eventually import non-xml files too, so let's begin splitting the logic up. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
#include <unistd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "dive.h"
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struct memblock {
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void *buffer;
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size_t size;
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};
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static int readfile(const char *filename, struct memblock *mem)
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{
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int ret, fd = open(filename, O_RDONLY);
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struct stat st;
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mem->buffer = NULL;
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mem->size = 0;
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fd = open(filename, O_RDONLY);
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if (fd < 0)
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return fd;
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ret = fstat(fd, &st);
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if (ret < 0)
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goto out;
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ret = -EINVAL;
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if (!S_ISREG(st.st_mode))
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goto out;
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ret = 0;
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if (!st.st_size)
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goto out;
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mem->buffer = malloc(st.st_size);
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ret = -1;
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errno = ENOMEM;
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if (!mem->buffer)
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goto out;
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mem->size = st.st_size;
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ret = read(fd, mem->buffer, mem->size);
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if (ret < 0)
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goto free;
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if (ret == mem->size)
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goto out;
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errno = EIO;
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ret = -1;
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free:
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free(mem->buffer);
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mem->buffer = NULL;
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mem->size = 0;
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out:
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close(fd);
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return ret;
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}
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void parse_file(const char *filename, GError **error)
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{
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struct memblock mem;
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if (readfile(filename, &mem) < 0) {
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fprintf(stderr, "Failed to read '%s'.\n", filename);
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if (error) {
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*error = g_error_new(g_quark_from_string("subsurface"),
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DIVE_ERROR_PARSE,
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"Failed to read '%s'",
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filename);
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}
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return;
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}
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parse_xml_buffer(filename, mem.buffer, mem.size, error);
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free(mem.buffer);
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}
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