140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
#include <stdbool.h>
|
|
|
|
#include "package_info.h"
|
|
|
|
PkgInfo *package_info_init() {
|
|
return calloc(1, sizeof(PkgInfo));
|
|
}
|
|
|
|
void package_info_free(PkgInfo *pkg_info) {
|
|
FREE_STRING(pkg_info->name);
|
|
FREE_STRING(pkg_info->base);
|
|
FREE_STRING(pkg_info->version);
|
|
FREE_STRING(pkg_info->description);
|
|
FREE_STRING(pkg_info->url);
|
|
FREE_STRING(pkg_info->arch);
|
|
FREE_STRING(pkg_info->packager);
|
|
FREE_STRING(pkg_info->pgpsig);
|
|
|
|
dynarray_free(pkg_info->groups);
|
|
dynarray_free(pkg_info->licenses);
|
|
dynarray_free(pkg_info->replaces);
|
|
dynarray_free(pkg_info->depends);
|
|
dynarray_free(pkg_info->conflicts);
|
|
dynarray_free(pkg_info->provides);
|
|
dynarray_free(pkg_info->optdepends);
|
|
dynarray_free(pkg_info->makedepends);
|
|
dynarray_free(pkg_info->checkdepends);
|
|
|
|
free(pkg_info);
|
|
}
|
|
|
|
/**
|
|
* Advance the pointer until all spaces are skipped.
|
|
*/
|
|
static inline char *trim_spaces_front(char *ptr) {
|
|
while (ptr[0] == ' ') {
|
|
ptr++;
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
/**
|
|
* Given a string pointer in the middle of a string, move over all spaces in the
|
|
* given direction. The final space is replaced with a NULL-byte.
|
|
*/
|
|
static inline void trim_spaces_back(char *ptr) {
|
|
if (ptr[0] != ' ') {
|
|
return;
|
|
}
|
|
|
|
while (ptr[-1] == ' ') {
|
|
ptr--;
|
|
}
|
|
|
|
ptr[0] = '\0';
|
|
}
|
|
|
|
#define PKG_INFO_STRING(key, field) if (strcmp(key_ptr, key) == 0) { pkg_info->field = strdup(value_ptr); goto advance; }
|
|
#define PKG_INFO_INT(key, field) if (strcmp(key_ptr, key) == 0) { pkg_info->field = atoi(value_ptr); goto advance; }
|
|
#define PKG_INFO_ARRAY(key, field) if (strcmp(key_ptr, key) == 0) { \
|
|
if (pkg_info->field == NULL) { pkg_info->field = dynarray_init(4); } \
|
|
dynarray_add(pkg_info->field, value_ptr); goto advance; \
|
|
}
|
|
|
|
int package_info_parse(PkgInfo *pkg_info, char *pkg_info_str) {
|
|
char *offset_ptr, *equals_ptr, *key_ptr, *value_ptr;
|
|
|
|
bool end = false;
|
|
|
|
// Iterate over all lines in file
|
|
while (!end) {
|
|
// This pointer will always point to the final character of the
|
|
// current line, be it the position of a newline or the NULL byte at
|
|
// the end of the entire string
|
|
offset_ptr = strchr(pkg_info_str, '\n');
|
|
|
|
// We replace the newline with a NULL byte. Now we know the line runs
|
|
// until the next NULL byte.
|
|
if (offset_ptr != NULL) {
|
|
offset_ptr[0] = '\0';
|
|
} else {
|
|
// Advance pointer to the NULL byte of the string
|
|
offset_ptr = pkg_info_str + 1;
|
|
|
|
while (*offset_ptr != '\0') {
|
|
offset_ptr++;
|
|
}
|
|
|
|
end = true;
|
|
}
|
|
|
|
// Skip comment lines
|
|
if (pkg_info_str[0] == '#') {
|
|
goto advance;
|
|
}
|
|
|
|
equals_ptr = strchr(pkg_info_str, '=');
|
|
|
|
// If a line doesn't contain an equals sign, the file is invalid
|
|
if (equals_ptr == NULL) {
|
|
return 1;
|
|
}
|
|
|
|
// Trim whitespace from key
|
|
key_ptr = trim_spaces_front(pkg_info_str);
|
|
trim_spaces_back(equals_ptr - 1);
|
|
|
|
// Trim spaces from value
|
|
value_ptr = trim_spaces_front(equals_ptr + 1);
|
|
trim_spaces_back(offset_ptr - 1);
|
|
|
|
// Match key
|
|
PKG_INFO_STRING("pkgname", name);
|
|
PKG_INFO_STRING("pkgbase", base);
|
|
PKG_INFO_STRING("pkgver", version);
|
|
PKG_INFO_STRING("pkgdesc", description);
|
|
PKG_INFO_INT("size", size);
|
|
PKG_INFO_STRING("url", url);
|
|
PKG_INFO_STRING("arch", arch);
|
|
PKG_INFO_INT("builddate", build_date);
|
|
PKG_INFO_STRING("packager", packager);
|
|
PKG_INFO_STRING("pgpsig", pgpsig);
|
|
PKG_INFO_INT("pgpsigsize", pgpsigsize);
|
|
PKG_INFO_ARRAY("group", groups);
|
|
PKG_INFO_ARRAY("license", licenses);
|
|
PKG_INFO_ARRAY("replaces", replaces);
|
|
PKG_INFO_ARRAY("depend", depends);
|
|
PKG_INFO_ARRAY("optdepend", optdepends);
|
|
PKG_INFO_ARRAY("makedepend", makedepends);
|
|
PKG_INFO_ARRAY("checkdepend", checkdepends);
|
|
|
|
advance:
|
|
pkg_info_str = offset_ptr + 1;
|
|
continue;
|
|
}
|
|
|
|
return 0;
|
|
}
|