mirror of https://github.com/pygos/pkg-utils.git
152 lines
2.8 KiB
C
152 lines
2.8 KiB
C
#include "pack.h"
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static int handle_requires(char *line, const char *filename,
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size_t linenum, void *obj)
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{
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char *ptr = line, *end;
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pkg_desc_t *desc = obj;
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dependency_t *dep;
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size_t len;
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while (*ptr != '\0') {
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while (isspace(*ptr))
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++ptr;
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end = ptr;
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while (*end != '\0' && !isspace(*end))
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++end;
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len = end - ptr;
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if (len == 0)
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break;
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if (len > 0xFF) {
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input_file_complain(filename, linenum, "dependency name too long");
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return -1;
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}
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dep = calloc(1, sizeof(*dep) + len + 1);
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if (dep == NULL) {
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input_file_complain(filename, linenum,
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"out of memory");
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return -1;
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}
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memcpy(dep->name, ptr, len);
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dep->type = PKG_DEPENDENCY_REQUIRES;
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dep->next = desc->deps;
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desc->deps = dep;
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ptr = end;
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}
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return 0;
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}
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static int handle_toc_compressor(char *line, const char *filename,
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size_t linenum, void *obj)
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{
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pkg_desc_t *desc = obj;
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desc->toccmp = compressor_by_name(line);
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if (desc->toccmp == NULL) {
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input_file_complain(filename, linenum, "unkown compressor");
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return -1;
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}
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return 0;
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}
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static int handle_data_compressor(char *line, const char *filename,
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size_t linenum, void *obj)
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{
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pkg_desc_t *desc = obj;
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desc->datacmp = compressor_by_name(line);
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if (desc->datacmp == NULL) {
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input_file_complain(filename, linenum, "unkown compressor");
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return -1;
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}
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return 0;
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}
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static const keyword_handler_t line_hooks[] = {
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{ "toc-compressor", handle_toc_compressor },
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{ "data-compressor", handle_data_compressor },
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{ "requires", handle_requires },
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};
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#define NUM_LINE_HOOKS (sizeof(line_hooks) / sizeof(line_hooks[0]))
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static compressor_t *get_default_compressor(void)
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{
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compressor_t *cmp;
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cmp = compressor_by_id(PKG_COMPRESSION_LZMA);
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if (cmp != NULL)
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return cmp;
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cmp = compressor_by_id(PKG_COMPRESSION_ZLIB);
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if (cmp != NULL)
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return cmp;
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cmp = compressor_by_id(PKG_COMPRESSION_NONE);
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if (cmp != NULL)
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return cmp;
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return cmp;
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}
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int desc_read(const char *path, pkg_desc_t *desc)
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{
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char *ptr;
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memset(desc, 0, sizeof(*desc));
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if (process_file(path, line_hooks, NUM_LINE_HOOKS, desc))
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return -1;
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if (desc->datacmp == NULL)
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desc->datacmp = get_default_compressor();
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if (desc->toccmp == NULL)
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desc->toccmp = get_default_compressor();
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if (desc->datacmp == NULL || desc->toccmp == NULL) {
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fputs("no compressor implementations available\n", stderr);
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desc_free(desc);
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return -1;
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}
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ptr = strrchr(path, '/');
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desc->name = strdup((ptr == NULL) ? path : (ptr + 1));
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if (desc->name == NULL) {
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fputs("out of memory\n", stderr);
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desc_free(desc);
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return -1;
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}
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ptr = strrchr(desc->name, '.');
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if (ptr != NULL)
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*ptr = '\0';
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return 0;
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}
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void desc_free(pkg_desc_t *desc)
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{
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dependency_t *dep;
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while (desc->deps != NULL) {
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dep = desc->deps;
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desc->deps = dep->next;
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free(dep);
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}
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free(desc->name);
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}
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