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/**
* @file deps.c
*/
#include "spm.h"
/**
*
* @param deps
* @param name
* @return
*/
int dep_seen(Dependencies **deps, const char *name) {
if (!deps) {
return -1;
}
for (size_t i = 0; i < (*deps)->records; i++) {
if (strstr((*deps)->list[i], name) != NULL) {
return 1;
}
}
return 0;
}
/**
*
* @param deps
* @return
*/
int dep_init(Dependencies **deps) {
(*deps) = (Dependencies *)calloc(1, sizeof(Dependencies));
(*deps)->__size = 2;
(*deps)->records = 0;
(*deps)->list = (char **)calloc((*deps)->__size, sizeof(char *));
if (!(*deps)->list) {
return -1;
}
return 0;
}
/**
*
* @param deps
*/
void dep_free(Dependencies **deps) {
for (size_t i = 0; i < (*deps)->records; i++) {
free((*deps)->list[i]);
}
free((*deps));
}
/**
*
* @param deps
* @param _name
* @return
*/
int dep_append(Dependencies **deps, char *_name) {
char *name = NULL;
char *bname = NULL;
if (!(*deps)) {
return -1;
}
name = find_package(_name);
if (!name) {
perror(_name);
fprintf(SYSERROR);
return -1;
}
bname = basename(name);
if (!bname) {
perror(name);
fprintf(SYSERROR);
return -1;
}
(*deps)->__size++;
(*deps)->list = (char **)realloc((*deps)->list, (sizeof(char *) * (*deps)->__size));
if (!(*deps)->list) {
free(name);
return -1;
}
(*deps)->list[(*deps)->records] = strdup(bname);
if (!(*deps)->list[(*deps)->records]) {
free(name);
return -1;
}
(*deps)->records++;
free(name);
return 0;
}
/**
*
* @param deps
* @param filename
* @return
*/
int dep_solve(Dependencies **deps, const char *filename) {
if (!(*deps)) {
return -1;
}
if (exists(filename) != 0) {
return -1;
}
FILE *fp = fopen(filename, "r");
if (!fp) {
perror(filename);
return -1;
}
char data[BUFSIZ];
memset(data, '\0', sizeof(data));
char *line = data;
int line_count = 0;
while (fgets(line, BUFSIZ, fp) != NULL) {
size_t line_length = strlen(line);
if (line_length > 1 && strstr(line, "\r\n")) {
line[line_length - 2] = '\0';
}
if (line_length > 1 && line[line_length - 1] == '\n') {
line[line_length - 1] = '\0';
}
if (strcmp(line, "") == 0) {
continue;
}
line_count++;
if (dep_seen(deps, line) > 0) {
// Already seen this dependency. Skip it.
continue;
}
else {
// Have not seen this dependency before
if (dep_append(deps, line) == 0) {
dep_solve(deps, line);
}
}
}
fclose(fp);
return line_count;
}
/**
*
* @param deps
* @param _package absolute path to package
* @return
*/
int dep_all(Dependencies **deps, const char *root, const char *_package) {
static int next = 0;
char *package = NULL;
char depfile[PATH_MAX];
char template[PATH_MAX];
char *suffix = (char *)calloc(PATH_MAX, sizeof(char));
memset(depfile, '\0', PATH_MAX);
memset(template, '\0', PATH_MAX);
strcpy(suffix, "spm_depends_all_XXXXXX");
// Verify the requested package pattern exists
package = find_file(root, _package);
if (!package) {
perror(_package);
fprintf(SYSERROR);
free(suffix);
return -1;
}
// Create a new temporary directory and extract the requested package into it
snprintf(template, PATH_MAX, "%s%c%s", TMP_DIR, DIRSEP, suffix);
char *tmpdir = mkdtemp(template);
if (!tmpdir) {
perror(template);
fprintf(SYSERROR);
free(package);
free(suffix);
return -1;
}
if (tar_extract_file(package, "./"SPM_META_DEPENDS, tmpdir) < 0) {
perror(package);
fprintf(SYSERROR);
free(package);
free(suffix);
return -1;
}
// Scan depencency tree
sprintf(depfile, "%s%c%s", tmpdir, DIRSEP, ".SPM_DEPENDS");
int resolved = dep_solve(deps, depfile);
// NOTE:
// 1. `resolved` is the number of dependencies for the package we're scanning
// 2. `next` permits us to converge on `resolved`, otherwise `i` would reset to `0` each time `dep_all` is called
for (int i = next; i < resolved; i++) {
next++;
if (dep_seen(deps, (*deps)->list[i])) {
dep_all(deps, root, (*deps)->list[i]);
}
}
// Remove temporary data
unlink(depfile);
rmdir(tmpdir);
free(package);
free(suffix);
return 0;
}
/**
*
* @param deps
*/
void dep_show(Dependencies **deps) {
if ((*deps) == NULL) {
return;
}
for (size_t i = 0; i < (*deps)->records; i++) {
printf(" -> %s\n", (*deps)->list[i]);
}
}
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