Generate platform specific fontmgr gm.

The gm output on different font platforms is so different
that comparing images in Gold has little value. Separate the
images by appending platform information to the gm name to
group somewhat similar images together.

Note that this does not attempt to make sure that all images
generated by Gold are nearly pixel identical; it only reduces
the number of nonsensical comparisons.

R=bungeman@google.com

Review URL: https://codereview.chromium.org/1245643002

1 files changed, 20 insertions, 0 deletions

diff --git a/tools/sk_tool_utils.cpp b/tools/sk_tool_utils.cpp
index 4d0e0bde68..b06fcda3a6 100644
--- a/tools/sk_tool_utils.cpp
+++ b/tools/sk_tool_utils.cpp
@@ -10,6 +10,7 @@
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
+#include "SkCommonFlags.h"
 #include "SkShader.h"
 #include "SkTestScalerContext.h"
 #include "SkTextBlob.h"
@@ -19,6 +20,25 @@ DEFINE_bool(resourceFonts, false, "Use resource fonts");
 
 namespace sk_tool_utils {
 
+const char* platform_os_name() {
+    for (int index = 0; index < FLAGS_key.count(); index += 2) {
+        if (!strcmp("os", FLAGS_key[index])) {
+            return FLAGS_key[index + 1];
+        }
+    }
+    // when running SampleApp or dm without a --key pair, omit the platform name
+    return "";
+}
+
+const char* platform_extra_config(const char* config) {
+    for (int index = 0; index < FLAGS_key.count(); index += 2) {
+        if (!strcmp("extra_config", FLAGS_key[index]) && !strcmp(config, FLAGS_key[index + 1])) {
+            return config;
+        }
+    }
+    return "";
+}
+
 const char* colortype_name(SkColorType ct) {
     switch (ct) {
         case kUnknown_SkColorType:      return "Unknown";