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-rw-r--r--main.c271
1 files changed, 0 insertions, 271 deletions
diff --git a/main.c b/main.c
deleted file mode 100644
index 53be611..0000000
--- a/main.c
+++ /dev/null
@@ -1,271 +0,0 @@
-#include <ctype.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <limits.h>
-#include <stdarg.h>
-#include <string.h>
-#include <unistd.h>
-#include <glob.h>
-
-#define SYSERROR stderr, "%s:%s:%d: %s\n", __FILE__, __FUNCTION__, __LINE__, strerror(errno)
-#define DIRSEP_WIN32 '\\'
-#define DIRSEP_UNIX '/'
-#if defined(_WIN32)
-#define DIRSEP DIRSEP_WIN32
-#define NOT_DIRSEP DIRSEP_UNIX
-#else
-#define DIRSEP DIRSEP_UNIX
-#define NOT_DIRSEP DIRSEP_WIN32
-#endif
-
-#define PKG_DIR "../pkgs"
-
-int shell(char *buf, const char *fmt, ...) {
- char *buf_orig = buf;
- va_list args;
- va_start(args, fmt);
-
- FILE *proc;
- int status = -1;
- char *outbuf = (char *)calloc(1, sizeof(char));
- if (!outbuf) {
- fprintf(SYSERROR);
- exit(errno);
- }
- char *cmd = (char *)calloc(PATH_MAX, sizeof(char));
- if (!cmd) {
- fprintf(SYSERROR);
- exit(errno);
- }
-
- vsnprintf(cmd, sizeof(outbuf), fmt, args);
-
- proc = popen(cmd, "r");
- if (!proc) {
- return status;
- }
-
- if (buf != NULL) {
- while (!feof(proc)) {
- *outbuf = fgetc(proc);
- if (isascii(*outbuf)) {
- *buf = *outbuf;
- }
- buf++;
- }
- buf = buf_orig;
- }
- status = pclose(proc);
- va_end(args);
- free(outbuf);
- free(cmd);
- return status;
-};
-
-/*
-int tar_extract_file(const char *archive, const char* filename, const char *destination) {
- int status = -1;
- char cmd[PATH_MAX];
- char output[3];
- sprintf(cmd, "tar xf %s %s -C %s 2>&1", archive, filename, destination);
- FILE *proc = popen(cmd, "r");
- if (!proc) {
- return status;
- }
- while (!feof(proc)) {
- fgets(output, 2, proc);
- printf("%s", output);
- }
- putchar('\n');
- return pclose(proc);
-};
- */
-
-int errglob(const char *epath, int eerrno) {
- fprintf(stderr, "glob matching error: %s (%d)", epath, eerrno);
- return eerrno;
-}
-
-int num_chars(const char *sptr, int ch) {
- int result = 0;
- for (int i = 0; sptr[i] != '\0'; i++) {
- if (sptr[i] == ch) {
- result++;
- }
- }
- return result;
-}
-
-int startswith(const char *sptr, const char *pattern) {
- for (int i = 0; i < strlen(pattern); i++) {
- if (sptr[i] != pattern[i]) {
- return -1;
- }
- }
- return 0;
-}
-
-int endswith(const char *sptr, const char *pattern) {
- size_t sptr_size = strlen(sptr);
- size_t pattern_size = strlen(pattern);
- for (size_t s = sptr_size - pattern_size, p = 0 ; s < sptr_size; s++, p++) {
- if (sptr[s] != pattern[p]) {
- return -1;
- }
- }
- return 0;
-}
-
-char *normpath(const char *path) {
- // Convert Win32 path to Unix path, and vice-versa
- char *result = strdup(path);
- char *tmp = result;
-
- while (*tmp) {
- if (*tmp == NOT_DIRSEP) {
- *tmp = DIRSEP;
- tmp++;
- continue;
- }
- tmp++;
- }
- return result;
-}
-
-/**
- * This function scans `sptr` from right to left removing any matches to `suffix` from `sptr`
- *
- * @param sptr string to be modified
- * @param suffix string to be removed from `sptr`
- */
-void strip(char *sptr, const char *suffix) {
- size_t sptr_len = strlen(sptr); //!< length of sptr
- size_t suffix_len = strlen(suffix); //!< length of suffix
- intptr_t target_offset = sptr_len - suffix_len; //!< offset to possible suffix
-
- // Prevent access to memory below input string
- if (target_offset < 0) {
- return;
- }
-
- // Create a pointer to where the suffix should be
- char *target = sptr + target_offset; //!< pointer to possible suffix
- if (!strcmp(target, suffix)) {
- // Purge the suffix
- memset(target, '\0', suffix_len);
- // Recursive call continues removing suffix until they are gone
- strip(sptr, suffix);
- }
-}
-
-/**
- * Deletes any characters matching `chars` from `sptr` string
- *
- * @param s string to be modified in-place
- * @param chars a string containing characters (e.g. " \n" would delete whitespace and line feeds)
- */
-void strchrdel(char *sptr, const char *chars) {
- while (*sptr != '\0') {
- for (int i = 0; chars[i] != '\0'; i++) {
- if (*sptr == chars[i]) {
- memmove(sptr, sptr + 1, strlen(sptr));
- }
- }
- sptr++;
- }
-}
-
-char *find_file(const char *root, const char *filename) {
- glob_t results;
- int glob_flags = 0;
- int match = 0;
- char *rootpath = NULL;
- char *path = NULL;
-
- // GUARD
- if (!root || !filename || strstr(filename, "..") || strstr(filename, "./")) {
- return NULL;
- }
-
- if (!(path = (char *)calloc(PATH_MAX + 1, sizeof(char)))) {
- fprintf(SYSERROR);
- exit(errno);
- }
-
- if (!(rootpath = realpath(root, NULL))) {
- return NULL;
- }
-
- strcat(path, rootpath);
- strcat(path, "/");
- strcat(path, filename);
-
- // Save a little time if the file exists
- if (access(path, F_OK) != -1) {
- return path;
- }
-
- // Inject wildcard
- strcat(path, "*");
- // Search for the file
- match = glob(path, glob_flags, errglob, &results);
-
- if (match != 0) {
- // report critical errors except GLOB_NOMATCH
- if (match == GLOB_NOSPACE || match == GLOB_ABORTED) {
- fprintf(SYSERROR);
- }
- return NULL;
- }
-
- // Resize path to the length of the first match
- char *want = results.gl_pathv[0];
- if (!(path = (char *)realloc(path, strlen(want) + 1))) {
- fprintf(SYSERROR);
- exit(errno);
- }
-
- // Replace path string with wanted path string
- strncpy(path, want, strlen(want));
-
- free(rootpath);
- globfree(&results);
- return path;
-}
-
-char *find_package(const char *filename) {
- return find_file(PKG_DIR, filename);
-}
-
-int main() {
- const char *pkg_name = "python";
- char *package = NULL;
- package = find_package(pkg_name);
- if (package != NULL) {
- printf("Package found: %s\n", package);
- free(package);
- }
- else {
- fprintf(stderr,"Package does not exist: %s\n", pkg_name);
- }
-
- const char *testpath = "x:\\a\\b\\c";
- const char *teststring = "this is test!";
- char *normalized = normpath(testpath);
- char buf[10240];
- memset(buf, 0, sizeof(buf));
-
- printf("%s becomes %s\n", testpath, normalized);
- printf("%d\n", startswith(testpath, "x:\\"));
- printf("%d\n", endswith(teststring, "test!"));
- //tar_extract_file("one", "two", testpath);
-
- int retval = -1;
- retval = shell(buf, "env");
- strip(buf, "\n");
- printf("%s\n", buf);
-
- free(normalized);
- return 0;
-} \ No newline at end of file
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