forked from vieter-v/libvieter
142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
#include "package.h"
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#define BUFF_SIZE 128
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#define ADD_STRING(section, field) if (pkg_info->field != 0) { \
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snprintf(aux, BUFF_SIZE, section, pkg_info->field); \
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dynarray_add(description, aux); \
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}
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#define ADD_ARRAY(section, field) i = 0; if (pkg_info->field != NULL) { \
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snprintf(aux, BUFF_SIZE, section, pkg_info->field->array[i]); i++; \
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dynarray_add(description, aux); \
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while (pkg_info->field->array[i] != NULL) { \
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snprintf(aux, BUFF_SIZE, "\n%s", pkg_info->field->array[i]); i++; \
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dynarray_add(description, aux); \
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} \
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}
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static char *ignored_names[5] = {
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".BUILDINFO",
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".INSTALL",
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".MTREE",
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".PKGINFO",
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".CHANGELOG"
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};
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static size_t ignored_words_len = sizeof(ignored_names) / sizeof(char *);
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Pkg *package_init() {
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return calloc(sizeof(PkgInfo), 1);
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}
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Pkg *package_read_archive(const char *pkg_path) {
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struct archive *a = archive_read_new();
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struct archive_entry *entry = archive_entry_new();
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// These three are the most commonly used compression methods
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archive_read_support_filter_zstd(a);
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archive_read_support_filter_gzip(a);
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archive_read_support_filter_xz(a);
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// Contents should always be a tarball
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archive_read_support_format_tar(a);
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// TODO where does this 10240 come from?
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int r = archive_read_open_filename(a, pkg_path, 10240);
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// Exit early if we weren't able to successfully open the archive for reading
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if (r != ARCHIVE_OK) {
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return NULL;
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}
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int compression_code = archive_filter_code(a, 0);
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const char *path_name;
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PkgInfo *pkg_info;
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DynArray *files = dynarray_init(16);
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dynarray_add(files, "%FILES%");
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while (archive_read_next_header(a, &entry) == ARCHIVE_OK) {
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path_name = archive_entry_pathname(entry);
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bool ignore = false;
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for (size_t i = 0; i < ignored_words_len; i++) {
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if (strcmp(path_name, ignored_names[i]) == 0) {
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ignore = true;
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break;
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}
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}
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if (!ignore) {
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dynarray_add(files, path_name);
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}
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if (strcmp(path_name, ".PKGINFO") == 0) {
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// Read data of file into memory buffer
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int size = archive_entry_size(entry);
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char *buf = malloc(size);
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archive_read_data(a, buf, size);
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// Parse package info string into a struct
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pkg_info = package_info_init();
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package_info_parse(pkg_info, buf);
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free(buf);
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} else {
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archive_read_data_skip(a);
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}
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}
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// Get size of file
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struct stat stats;
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if (stat(pkg_path, &stats) != 0) {
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return NULL;
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}
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pkg_info->csize = stats.st_size;
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archive_read_free(a);
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// Create final return value
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Pkg *pkg = package_init();
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pkg->path = strdup(pkg_path);
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pkg->info = pkg_info;
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pkg->files = files;
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pkg->compression = compression_code;
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return pkg;
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}
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char **package_to_description(Pkg *pkg) {
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PkgInfo *pkg_info = pkg->info;
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DynArray *description = dynarray_init(16);
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char aux[BUFF_SIZE];
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int i;
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ADD_STRING("\n\n%%NAME%%\n%s", name);
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ADD_STRING("-%s", version);
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ADD_STRING("\n\n%%PKGBASE%%\n%s", base);
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ADD_STRING("\n\n%%DESCRIPTION%%\n%s", description);
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ADD_STRING("\n\n%%SIZE%%\n%ld", size);
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ADD_STRING("\n\n%%CSIZE%%\n%ld", csize);
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ADD_STRING("\n\n%%URL%%\n%s", url);
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ADD_STRING("\n\n%%ARCH%%\n%s", arch);
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ADD_STRING("\n\n%%BUILD_DATE%%\n%ld", build_date);
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ADD_STRING("\n\n%%PACKAGER%%\n%s", packager);
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ADD_ARRAY("\n\n%%GROUPS%%\n%s", groups);
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ADD_ARRAY("\n\n%%LICENSES%%\n%s", licenses);
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ADD_ARRAY("\n\n%%REPLACES%%\n%s", replaces);
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ADD_ARRAY("\n\n%%DEPENDS%%\n%s", depends);
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ADD_ARRAY("\n\n%%CONFLICTS%%\n%s", conflicts);
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ADD_ARRAY("\n\n%%PROVIDES%%\n%s", provides);
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ADD_ARRAY("\n\n%%OPTDEPENDS%%\n%s", optdepends);
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ADD_ARRAY("\n\n%%MAKEDEPENDS%%\n%s", makedepends);
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ADD_ARRAY("\n\n%%CHECKDEPENDS%%\n%s", checkdepends);
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return description;
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}
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