From 95c2b4624423309993bd27d8abc97a641510d302 Mon Sep 17 00:00:00 2001
From: cosmonaut <evan@moonside.games>
Date: Thu, 11 Aug 2022 10:26:11 -0700
Subject: [PATCH] linux compatibility fixes

---
 CMakeLists.txt                       | 14 ++++++++++++--
 include/cram.h                       |  8 ++++++++
 src/cram.c                           | 28 ----------------------------
 tools/cli/json_writer.h              |  4 +++-
 tools/cli/lib/{ => windows}/dirent.h |  0
 tools/cli/main.c                     | 10 +++++-----
 6 files changed, 28 insertions(+), 36 deletions(-)
 rename tools/cli/lib/{ => windows}/dirent.h (100%)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9088036..8462248 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -57,18 +57,27 @@ if(BUILD_SHARED_LIBS)
 endif()
 
 if(BUILD_CLI)
-	add_executable(cramcli
-		tools/cli/lib/dirent.h
+	file(GLOB CLI_SOURCES
 		tools/cli/lib/stb_image_write.h
 		tools/cli/json_writer.h
 		tools/cli/main.c
 	)
 
+	if(WIN32)
+		list(APPEND CLI_SOURCES tools/cli/lib/dirent.h)
+	endif()
+
+	add_executable(cramcli ${CLI_SOURCES})
+
 	if(BUILD_SHARED_LIBS)
 		target_link_libraries(cramcli PUBLIC Cram)
 	else()
 		target_link_libraries(cramcli PRIVATE Cram)
 	endif()
+
+	if(WIN32)
+		target_include_directories(cramcli PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/tools/cli/lib/windows>)
+	endif()
 endif()
 
 if(BUILD_SHARED_LIBS)
@@ -80,6 +89,7 @@ endif()
 # Build flags
 if(NOT MSVC)
 	set_property(TARGET Cram PROPERTY COMPILE_FLAGS "-std=gnu99 -Wall -Wno-strict-aliasing -pedantic")
+	target_link_libraries(Cram PUBLIC m)
 endif()
 
 # includes
diff --git a/include/cram.h b/include/cram.h
index df58882..cb60119 100644
--- a/include/cram.h
+++ b/include/cram.h
@@ -54,6 +54,14 @@
 #define SEPARATOR '/'
 #endif
 
+#ifndef max
+#define max(x, y) (((x) > (y)) ? (x) : (y))
+#endif
+
+#ifndef min
+#define min(x, y) (((x) < (y)) ? (x) : (y))
+#endif
+
 #ifdef __cplusplus
 extern "C"
 {
diff --git a/src/cram.c b/src/cram.c
index 5d546a6..2eaba3d 100644
--- a/src/cram.c
+++ b/src/cram.c
@@ -104,19 +104,6 @@ typedef struct PackScoreInfo
 
 /* Pixel data functions */
 
-/* https://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2 */
-static uint32_t Cram_Internal_NextPowerOfTwo(uint32_t v)
-{
-	v--;
-	v |= v >> 1;
-	v |= v >> 2;
-	v |= v >> 4;
-	v |= v >> 8;
-	v |= v >> 16;
-	v++;
-	return v;
-}
-
 static uint8_t Cram_Internal_IsImageEqual(Cram_Image *a, Cram_Image *b)
 {
 	int32_t i;
@@ -499,21 +486,6 @@ Cram_Context* Cram_Init(Cram_ContextCreateInfo *createInfo)
 	return (Cram_Context*) context;
 }
 
-static char* Cram_Internal_GetImageName(const char *path)
-{
-	char *lastSeparator = strrchr(path, SEPARATOR) + 1;
-	size_t returnBytes = strlen(lastSeparator) + 1;
-	char *name = malloc(returnBytes);
-	int32_t i;
-
-	for (i = 0; i < returnBytes; i += 1)
-	{
-		name[i] = lastSeparator[i];
-	}
-
-	return name;
-}
-
 void Cram_AddFile(Cram_Context *context, const char *path)
 {
 	Cram_Internal_Context *internalContext = (Cram_Internal_Context*) context;
diff --git a/tools/cli/json_writer.h b/tools/cli/json_writer.h
index 069ade9..62816ab 100644
--- a/tools/cli/json_writer.h
+++ b/tools/cli/json_writer.h
@@ -29,6 +29,8 @@
 
 #include <string.h>
 #include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
 
 #define INITIAL_JSON_OUTPUT_CAPACITY 2048
 
@@ -114,7 +116,7 @@ void JsonBuilder_AppendStringProperty(JsonBuilder *builder, char *propertyName,
 void JsonBuilder_AppendIntProperty(JsonBuilder *builder, char *propertyName, int32_t value)
 {
 	char buffer[65];
-	itoa(value, buffer, 10);
+	sprintf(buffer, "%d", value);
 	JsonBuilder_AppendProperty(builder, propertyName, buffer, 0);
 }
 
diff --git a/tools/cli/lib/dirent.h b/tools/cli/lib/windows/dirent.h
similarity index 100%
rename from tools/cli/lib/dirent.h
rename to tools/cli/lib/windows/dirent.h
diff --git a/tools/cli/main.c b/tools/cli/main.c
index b1a5232..54fdab0 100644
--- a/tools/cli/main.c
+++ b/tools/cli/main.c
@@ -24,8 +24,8 @@
  *
  */
 
+#include <dirent.h>
 #include "cram.h"
-#include "dirent.h"
 #include "json_writer.h"
 
 #define STB_IMAGE_WRITE_IMPLEMENTATION
@@ -48,7 +48,7 @@ static const char* GetFilenameExtension(const char *filename)
 /* Mostly taken from K&R C 2nd edition page 182 */
 static void dirwalk(char *dir)
 {
-	dirent *dp;
+	struct dirent *dp;
 	DIR *dfd;
 	char subname[2048];
 
@@ -135,8 +135,8 @@ int main(int argc, char *argv[])
 {
 	Cram_ContextCreateInfo createInfo;
 	uint8_t *pixelData;
-	uint32_t width;
-	uint32_t height;
+	int32_t width;
+	int32_t height;
 	char *arg;
 	char *inputDirPath = NULL;
 	char *outputDirPath = NULL;
@@ -299,7 +299,7 @@ int main(int argc, char *argv[])
 		return 1;
 	}
 
-	fprintf(jsonOutput, jsonBuilder->string);
+	fprintf(jsonOutput, "%s", jsonBuilder->string);
 
 	JsonBuilder_Destroy(jsonBuilder);
 	fclose(jsonOutput);