From 66f5601712ddaa28e75f99e5e3c1ce94b99f28e5 Mon Sep 17 00:00:00 2001
From: simon <me@simon987.net>
Date: Sat, 22 Feb 2020 12:40:53 -0500
Subject: [PATCH] Initial commit

---
 .gitignore     |  9 ++++++
 CMakeLists.txt | 26 +++++++++++++++
 ci/build.sh    |  5 +++
 main.c         | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 128 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 CMakeLists.txt
 create mode 100755 ci/build.sh
 create mode 100644 main.c

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e83dcc7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+.idea/
+*.iml
+cmake_install.cmake
+*.cbp
+Makefile
+CMakeCache.txt
+CMakeFiles
+cmake-build-debug
+cbr2cbz
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..742f41f
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.7)
+project(cbr2cbz C)
+
+set(CMAKE_C_STANDARD 11)
+option(STATIC_BUILD "Static build" off)
+
+add_executable(cbr2cbz main.c)
+
+if (STATIC_BUILD)
+    target_link_libraries(
+            cbr2cbz
+            -static
+            archive
+    )
+else ()
+    target_link_libraries(
+            cbr2cbz
+            archive
+    )
+endif ()
+
+target_compile_options(
+        cbr2cbz
+        PRIVATE
+)
+
diff --git a/ci/build.sh b/ci/build.sh
new file mode 100755
index 0000000..94d21af
--- /dev/null
+++ b/ci/build.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env sh
+
+cmake -D STATIC_BUILD=on .
+make
+strip cbr2cbz
\ No newline at end of file
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..dbda90b
--- /dev/null
+++ b/main.c
@@ -0,0 +1,88 @@
+#include <archive.h>
+#include <string.h>
+#include <wordexp.h>
+#include <stdlib.h>
+
+#define ARC_BUF_SIZE 8192
+
+char *abspath(const char *path) {
+    char *abs = realpath(path, NULL);
+    if (abs == NULL) {
+        return NULL;
+    }
+
+    return abs;
+}
+
+void convert_cbr(char *rar_in_path) {
+
+    if (strstr(rar_in_path, ".cbr") == NULL) {
+        fprintf(stderr, "Input file does not have .cbr extension");
+        return;
+    }
+
+    char zip_out_path[4096];
+    strcpy(zip_out_path, rar_in_path);
+    memcpy(strstr(zip_out_path, ".cbr"), ".cbz\0", 5);
+
+    struct stat _;
+    if (stat(zip_out_path, &_) == 0) {
+        return;
+    }
+
+    struct archive *rar_in = archive_read_new();
+    archive_read_support_filter_none(rar_in);
+    archive_read_support_format_rar(rar_in);
+    archive_read_support_format_rar5(rar_in);
+
+    int ret = archive_read_open_filename(rar_in, rar_in_path, ARC_BUF_SIZE);
+    if (ret != ARCHIVE_OK) {
+        fprintf(stderr, "%s\n", archive_error_string(rar_in));
+        return;
+    }
+
+    struct archive *zip_out = archive_write_new();
+    archive_write_set_format_zip(zip_out);
+    ret = archive_write_open_filename(zip_out, zip_out_path);
+    if (ret != ARCHIVE_OK) {
+        fprintf(stderr, "%s\n", archive_error_string(zip_out));
+        return;
+    }
+
+
+    struct archive_entry *entry;
+    while (archive_read_next_header(rar_in, &entry) == ARCHIVE_OK) {
+        archive_write_header(zip_out, entry);
+
+        char arc_buf[ARC_BUF_SIZE];
+        int len = archive_read_data(rar_in, arc_buf, ARC_BUF_SIZE);
+        while (len > 0) {
+            archive_write_data(zip_out, arc_buf, len);
+            len = archive_read_data(rar_in, arc_buf, ARC_BUF_SIZE);
+        }
+    }
+
+    archive_write_close(zip_out);
+    archive_write_free(zip_out);
+
+    archive_read_close(rar_in);
+    archive_read_free(rar_in);
+}
+
+int main(int argc, char **argv) {
+
+    if (argc == 1) {
+        fprintf(stderr, "USAGE: cbr2cbz FILE...\n");
+    }
+
+    for (int i = 1; i < argc; i++) {
+        char *abs = abspath(argv[i]);
+
+        if (abs == NULL) {
+            fprintf(stderr, "File not found: '%s'\n", argv[i]);
+            continue;
+        }
+        convert_cbr(abs);
+        free(abs);
+    }
+}