Full path is now metadata->path and basename metadata->name

Shouldn't have rushed to 1.0.0 so quickly. Oh well, I guess I can allow 1.1.0...

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.8..3.22)
 
-project(minitar LANGUAGES C VERSION 1.0.0)
+project(minitar LANGUAGES C VERSION 1.1.0)
 
 set(SOURCES
     src/tar.c

README.md

@@ -25,7 +25,7 @@ int main(int argc, char** argv)
 	do {
 		entry = minitar_read_entry(mp);
 		if(entry) { 
-			printf("%s\n", entry->metadata.name);
+			printf("%s\n", entry->metadata.path);
 			minitar_free_entry(entry);
 		}
 	} while(entry);
@@ -75,10 +75,16 @@ The state of `mp` after `minitar_find_by_name()` returns is unspecified, but a s
 
 In order to perform other minitar operations on the archive, `minitar_rewind()` should probably be called first, to get a known state.
 
+### minitar_find_by_path
+`struct minitar_entry* minitar_find_by_path(struct minitar* mp, const char* path)`
+
+Same as `minitar_find_by_name()`, but matches the full path inside the archive instead of the file name.
+
+
 ### minitar_find_any_of
 `struct minitar_entry* minitar_find_any_of(struct minitar* mp, enum minitar_file_type type)`
 
-Does the same thing as `minitar_find_by_name()`, but matches the file type instead of the name. As with `minitar_find_by_name()`, this function starts searching from the current archive position and calling it in a loop until it returns NULL will return all matching entries.
+Same as `minitar_find_by_name()`, but matches the file type instead of the name. As with `minitar_find_by_name()`, this function starts searching from the current archive position and calling it in a loop until it returns NULL will return all matching entries.
 
 ### minitar_read_contents
 `size_t minitar_read_contents(struct minitar* mp, struct minitar_entry* entry, char* buf, size_t max)`
@@ -122,7 +128,9 @@ Other file types supported in tar archives, such as FIFOs or symlinks, are not s
 
 This structure represents an entry's metadata, with the following fields:
 
-`name`: A string representing the full path of the entry within the archive. (`char[]`)
+`path`: A string representing the full path of the entry within the archive. (`char[]`)
+
+`name`: A string representing the base name of the entry (the last component of its path). (`char[]`)
 
 `mode`: An integer representing the permissions of the entry. (`mode_t`)
 

minitar.h

@@ -22,7 +22,8 @@ enum minitar_file_type
 
 struct minitar_entry_metadata
 {
-    char name[257];
+    char path[257];
+    char name[128];
     mode_t mode;
     uid_t uid;
     gid_t gid;
@@ -49,6 +50,7 @@ extern "C"
     void minitar_free_entry(struct minitar_entry* entry);
     void minitar_rewind(struct minitar* mp);
     struct minitar_entry* minitar_find_by_name(struct minitar* mp, const char* name);
+    struct minitar_entry* minitar_find_by_path(struct minitar* mp, const char* path);
     struct minitar_entry* minitar_find_any_of(struct minitar* mp, enum minitar_file_type type);
     int minitar_close(struct minitar* mp);
     size_t minitar_read_contents(struct minitar* mp, struct minitar_entry* entry, char* buf, size_t max);

src/tar.c

@@ -92,6 +92,20 @@ struct minitar_entry* minitar_find_by_name(struct minitar* mp, const char* name)
     return NULL;
 }
 
+struct minitar_entry* minitar_find_by_path(struct minitar* mp, const char* path)
+{
+    struct minitar_entry* entry;
+    do {
+        entry = minitar_read_entry(mp);
+        if (entry)
+        {
+            if (!strcmp(entry->metadata.path, path)) return entry;
+            minitar_free_entry(entry);
+        }
+    } while (entry);
+    return NULL;
+}
+
 struct minitar_entry* minitar_find_any_of(struct minitar* mp, enum minitar_file_type type)
 {
     struct minitar_entry* entry;

src/util.c

@@ -3,6 +3,7 @@
 #define _IN_MINITAR
 #include "minitar.h"
 #include "tar.h"
+#include <libgen.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdnoreturn.h>
@@ -58,30 +59,38 @@ void minitar_parse_metadata_from_tar_header(const struct tar_header* hdr, struct
 {
     if (!strlen(hdr->prefix))
     {
-        minitar_strlcpy(metadata->name, hdr->name, 100);
+        size_t size = minitar_strlcpy(metadata->path, hdr->name, 100);
-        metadata->name[100] = '\0';
+        if (size >= 100) metadata->path[100] = '\0';
+        else
+            metadata->path[size] = '\0';
     }
     else
     {
-        minitar_strlcpy(metadata->name, hdr->prefix, 155);
+        minitar_strlcpy(metadata->path, hdr->prefix, 155);
-        minitar_append_char(metadata->name, '/');
+        minitar_append_char(metadata->path, '/');
-        strncat(metadata->name, hdr->name, 100);
+        strncat(metadata->path, hdr->name, 100);
-        metadata->name[256] = '\0';
+        metadata->path[256] = '\0';
     }
 
+    char* mut_path = strdup(metadata->path);
+    if (!mut_path) minitar_panic("Failed to allocate memory");
+    char* bname = basename(mut_path);
+    minitar_strlcpy(metadata->name, bname, sizeof(metadata->name));
+    free(mut_path);
+
     metadata->mode = (mode_t)strtoul(hdr->mode, NULL, 8);
     metadata->uid = (uid_t)strtoul(hdr->uid, NULL, 8);
     metadata->gid = (gid_t)strtoul(hdr->gid, NULL, 8);
 
     char* sizeptr = strndup(
         hdr->size, 12); // The hdr->size field is not null-terminated, yet strndup returns a null-terminated string.
-    if (!sizeptr) minitar_panic("Failed to allocate memory to duplicate a tar header's size field");
+    if (!sizeptr) minitar_panic("Failed to allocate memory");
     metadata->size = (size_t)strtoull(sizeptr, NULL, 8);
     free(sizeptr);
 
     char* timeptr = strndup(
         hdr->mtime, 12); // The hdr->mtime field is not null-terminated, yet strndup returns a null-terminated string.
-    if (!timeptr) minitar_panic("Failed to allocate memory to duplicate a tar header's mtime field");
+    if (!timeptr) minitar_panic("Failed to allocate memory");
     metadata->mtime = (time_t)strtoull(timeptr, NULL, 8);
     free(timeptr);