From 8507ee602303ac11fcc12cc0e340da2821ceb9ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Sat, 14 Mar 2020 12:55:09 +0200
Subject: [PATCH] windres-wrapper: Do the format name comparisons case
 insensitively

---
 wrappers/native-wrapper.h  |  9 +++++++++
 wrappers/windres-wrapper.c | 10 +++++-----
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/wrappers/native-wrapper.h b/wrappers/native-wrapper.h
index 7a16174..7b0c16f 100644
--- a/wrappers/native-wrapper.h
+++ b/wrappers/native-wrapper.h
@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <ctype.h>
 
 #ifdef _WIN32
 #define WIN32_LEAN_AND_MEAN
@@ -94,6 +95,14 @@ static inline int _tspawnvp_escape(int mode, const TCHAR *filename, const TCHAR
     escaped_argv[num_args] = NULL;
     return _tspawnvp(mode, filename, escaped_argv);
 }
+#else
+static inline int _tcsicmp(const TCHAR *a, const TCHAR *b) {
+    while (*a && tolower(*a) == tolower(*b)) {
+        a++;
+        b++;
+    }
+    return *a - *b;
+}
 #endif
 
 static inline TCHAR *concat(const TCHAR *prefix, const TCHAR *suffix) {
diff --git a/wrappers/windres-wrapper.c b/wrappers/windres-wrapper.c
index 2caf526..d3417d3 100644
--- a/wrappers/windres-wrapper.c
+++ b/wrappers/windres-wrapper.c
@@ -292,7 +292,7 @@ int _tmain(int argc, TCHAR* argv[]) {
     const TCHAR **exec_argv = malloc((max_arg + 1) * sizeof(*exec_argv));
     int arg = 0;
 
-    if (!_tcscmp(input_format, _T("rc"))) {
+    if (!_tcsicmp(input_format, _T("rc"))) {
         exec_argv[arg++] = concat(dir, CC);
         exec_argv[arg++] = _T("-E");
         for (int i = 0; i < nb_cpp_options; i++)
@@ -327,7 +327,7 @@ int _tmain(int argc, TCHAR* argv[]) {
         exec_argv[arg++] = _T("-c");
         exec_argv[arg++] = codepage;
         exec_argv[arg++] = _T("-fo");
-        if (!_tcscmp(output_format, _T("res")))
+        if (!_tcsicmp(output_format, _T("res")))
             exec_argv[arg++] = output;
         else
             exec_argv[arg++] = res;
@@ -348,9 +348,9 @@ int _tmain(int argc, TCHAR* argv[]) {
             return ret;
         }
 
-        if (!_tcscmp(output_format, _T("res"))) {
+        if (!_tcsicmp(output_format, _T("res"))) {
             // All done
-        } else if (!_tcscmp(output_format, _T("coff"))) {
+        } else if (!_tcsicmp(output_format, _T("coff"))) {
             arg = 0;
             exec_argv[arg++] = concat(dir, _T("llvm-cvtres"));
             exec_argv[arg++] = res;
@@ -374,7 +374,7 @@ int _tmain(int argc, TCHAR* argv[]) {
         } else {
             error(basename, _T("invalid output format: `"TS"'"), output_format);
         }
-    } else if (!_tcscmp(input_format, _T("res"))) {
+    } else if (!_tcsicmp(input_format, _T("res"))) {
         exec_argv[arg++] = concat(dir, _T("llvm-cvtres"));
         exec_argv[arg++] = input;
         exec_argv[arg++] = concat(_T("-machine:"), machine);