ckolivas/lrzip
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Add simple high level liblrzip interfaces.

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This commit is contained in:
Con Kolivas 2011-08-17 21:03:02 +10:00
parent 8d299570e9
commit 651c4f6252
2 changed files with 133 additions and 0 deletions
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95
liblrzip.c
View file

@ -19,6 +19,23 @@
#include "lrzip.h"
#include "rzip.h"
#ifdef __APPLE__
# define fmemopen(s, len, modes) fake_fmemopen((s), (len), (modes))
static FILE *fake_fmemopen(void *buf, size_t buflen, const char *mode)
{
FILE *in;
in = tmpfile();
if (!in) return NULL;
if (fwrite(buf, buflen, 1, in) != 1) {
fclose(in);
return NULL;
}
rewind(in);
return in;
}
#endif
static void liblrzip_index_update(size_t x, size_t *idx, void **queue)
{
for (; x < *idx; x++)
@ -543,3 +560,81 @@ void lrzip_info_cb_set(Lrzip *lr, Lrzip_Info_Cb cb, void *data)
lr->control->info_data = data;
}
bool lrzip_compress_full(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len, Lrzip_Mode mode, int compress_level)
{
Lrzip *lr;
FILE *s, *d;
struct stat st;
int fd;
if ((!dest) || (!dest_len) || (!source) || (!source_len) || (mode < LRZIP_MODE_COMPRESS_NONE)) return false;
lrzip_init();
if (!mode) mode = LRZIP_MODE_COMPRESS_LZMA;
lr = lrzip_new(mode);
if (!lr) return false;
lrzip_config_env(lr);
s = fmemopen((void*)source, source_len, "r");
d = tmpfile();
if ((!s) || (!d)) goto error;
if (!lrzip_file_add(lr, s)) goto error;
lrzip_outfile_set(lr, d);
if (!lrzip_compression_level_set(lr, compress_level)) goto error;
if (!lrzip_run(lr)) goto error;
fd = fileno(d);
if (fstat(fd, &st)) goto error;
*dest_len = st.st_size;
fread(dest, sizeof(char), st.st_size, d);
if (ferror(d)) goto error;
fclose(s);
fclose(d);
return true;
error:
if (s) fclose(s);
if (d) fclose(d);
lrzip_free(lr);
return false;
}
bool lrzip_decompress(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len)
{
Lrzip *lr;
FILE *s, *d;
struct stat st;
int fd;
if ((!dest) || (!dest_len) || (!source) || (!source_len)) return false;
lrzip_init();
lr = lrzip_new(LRZIP_MODE_DECOMPRESS);
if (!lr) return false;
lrzip_config_env(lr);
s = fmemopen((void*)source, source_len, "r");
d = tmpfile();
if ((!s) || (!d)) goto error;
if (!lrzip_file_add(lr, s)) goto error;
lrzip_outfile_set(lr, d);
if (!lrzip_run(lr)) goto error;
fd = fileno(d);
if (fstat(fd, &st)) goto error;
*dest_len = st.st_size;
fread(dest, sizeof(char), st.st_size, d);
if (ferror(d)) goto error;
fclose(s);
fclose(d);
return true;
error:
if (s) fclose(s);
if (d) fclose(d);
lrzip_free(lr);
return false;
}

38
liblrzip.h
View file

@ -112,5 +112,43 @@ void lrzip_log_stderr_set(Lrzip *lr, FILE *err);
FILE *lrzip_log_stderr_get(Lrzip *lr);
void lrzip_pass_cb_set(Lrzip *lr, Lrzip_Password_Cb cb, void *data);
void lrzip_info_cb_set(Lrzip *lr, Lrzip_Info_Cb cb, void *data);
bool lrzip_decompress(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len);
bool lrzip_compress_full(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len, Lrzip_Mode mode, int compress_level);
static inline bool lrzip_compress(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_LZMA, 7); }
static inline bool lrzip_lcompress(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_LZO, 7); }
static inline bool lrzip_gcompress(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_ZLIB, 7); }
static inline bool lrzip_zcompress(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_ZPAQ, 7); }
static inline bool lrzip_bcompress(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_BZIP2, 7); }
static inline bool lrzip_rcompress(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_NONE, 7); }
static inline bool lrzip_compress2(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len, int compress_level)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_LZMA, compress_level); }
static inline bool lrzip_lcompress2(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len, int compress_level)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_LZO, compress_level); }
static inline bool lrzip_gcompress2(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len, int compress_level)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_ZLIB, compress_level); }
static inline bool lrzip_zcompress2(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len, int compress_level)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_ZPAQ, compress_level); }
static inline bool lrzip_bcompress2(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len, int compress_level)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_BZIP2, compress_level); }
static inline bool lrzip_rcompress2(void *dest, unsigned long *dest_len, const void *source, unsigned long source_len, int compress_level)
{ return lrzip_compress_full(dest, dest_len, source, source_len, LRZIP_MODE_COMPRESS_NONE, compress_level); }
#endif