From de89946f5fe78323f113c6216c8b994a1eba49fe Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Tue, 24 Nov 2020 16:49:29 -0500
Subject: Removed dependency on unzip

---
 Makefile        |  4 ++--
 libbible.h      |  3 ++-
 mods.cc         | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++-----
 testLibbible.cc |  4 ++--
 4 files changed, 69 insertions(+), 11 deletions(-)

diff --git a/Makefile b/Makefile
index c7437b2..032e165 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 CC=g++
-LIBS=sword
-CFLAGS=-c -Wall -fPIC
+LIBS=sword minizip
+CFLAGS=-c -Wall -fPIC -std=c++17
 LDFLAGS=
 SOURCES=libbible.cc mods.cc settings.cc
 OBJECTS=$(SOURCES:.cc=.o)
diff --git a/libbible.h b/libbible.h
index c1058e7..82a15ab 100644
--- a/libbible.h
+++ b/libbible.h
@@ -79,8 +79,9 @@ namespace libbible {
 
     /**
      * @param filename Path to the .zip compressed module to be installed
+     * @return true on success, false otherwise
      */
-    void installModFromZip(std::string filename);
+    bool installModFromZip(std::string filename);
 
     /**
      * @param modname The name of the module to be removed
diff --git a/mods.cc b/mods.cc
index 9c9483e..2c9cf22 100644
--- a/mods.cc
+++ b/mods.cc
@@ -4,6 +4,8 @@
 #include <sword/installmgr.h>
 #include <sword/filemgr.h>
 #include <sword/remotetrans.h>
+#include <unzip.h>
+#include <filesystem>
 
 using namespace std;
 
@@ -116,16 +118,71 @@ bool libbible::installModFromInternet(string language, string name) {
     return false;
 }
 
-void libbible::installModFromZip(string filename) {
+#define READ_SIZE 8192
+#define delim '/'
+
+bool libbible::installModFromZip(string filename) {
     // So... turns out it's a mite unsupported to install from a .zip
     // Here's the deal. We do a syscall to unzip. We fancy like that.
     // TODO: Use the ZipCompress module from SWORD instead.
-    string command = "unzip -o " + filename + " -d " + basedir + "&> /dev/null";
-    if(system(command.c_str())) {
-        //Uh oh...
-        printf("Something bad happened when unpacking %s\n. Is unzip installed?", filename.c_str());
+    /*string command = "unzip -o " + filename + " -d " + basedir + "&> /dev/null";
+      if(system(command.c_str())) {
+    //Uh oh...
+    printf("Something bad happened when unpacking %s\n. Is unzip installed?", filename.c_str());
+    }*/
+    unzFile zipfile = unzOpen(filename.c_str());
+    if(zipfile == NULL) {
+        return false;
     }
-
+    unz_global_info global_info;
+    if(unzGetGlobalInfo(zipfile, &global_info) != UNZ_OK) {
+        unzClose(zipfile);
+        return false;
+    }
+    char read_buffer[READ_SIZE];
+    ulong i;
+    for(i = 0; i < global_info.number_entry; i++) {
+        unz_file_info file_info;
+        if(unzGetCurrentFileInfo(zipfile, &file_info, read_buffer, READ_SIZE, NULL, 0, NULL, 0) != UNZ_OK) {
+            unzClose(zipfile);
+            return false;
+        }
+        string fname = basedir + string(read_buffer);
+        size_t pos = fname.find_last_of(delim);
+        if(pos != string::npos) {
+            string path = fname.substr(0, pos);
+            filesystem::create_directories(path);
+        }
+        if(unzOpenCurrentFile(zipfile) != UNZ_OK) {
+            unzCloseCurrentFile(zipfile);
+            unzClose(zipfile);
+            return false;
+        }
+        FILE *out = fopen(fname.c_str(), "wb");
+        if(out == NULL) {
+            unzCloseCurrentFile(zipfile);
+            unzClose(zipfile);
+            return false;
+        }
+        int bytesRead;
+        do {
+            bytesRead = unzReadCurrentFile(zipfile, read_buffer, READ_SIZE);
+            if(bytesRead < 0) {
+                printf("error %d\n", bytesRead);
+                unzCloseCurrentFile(zipfile);
+                unzClose(zipfile);
+                return false;
+            }
+            if(bytesRead > 0) {
+                fwrite(read_buffer, bytesRead, 1, out);
+            }
+        } while(bytesRead > 0);
+        fclose(out);
+        unzCloseCurrentFile(zipfile);
+        unzGoToNextFile(zipfile);
+    }
+    unzClose(zipfile);
+    return true;
 }
 
 void libbible::uninstallMod(string modname) {
diff --git a/testLibbible.cc b/testLibbible.cc
index b8f93b3..20ff7d9 100644
--- a/testLibbible.cc
+++ b/testLibbible.cc
@@ -78,8 +78,8 @@ void TestLibbible::testGetModules(void) {
         libbible::uninstallMod(pair.first);
     }
     CPPUNIT_ASSERT(libbible::getModules().empty());
-    libbible::installModFromZip("modules/KJV.zip");
-    libbible::installModFromZip("modules/JPS.zip");
+    CPPUNIT_ASSERT(libbible::installModFromZip("modules/KJV.zip"));
+    CPPUNIT_ASSERT(libbible::installModFromZip("modules/JPS.zip"));
     mods = libbible::getModules();
     CPPUNIT_ASSERT(mods.find("KJV") != mods.end());
     CPPUNIT_ASSERT(mods["KJV"].size() == 66);
-- 
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