From 93f7baae7fcd707f7080786a9c117fb92269d798 Mon Sep 17 00:00:00 2001
From: root <root@debian>
Date: Sun, 14 Sep 2014 21:27:21 +0000
Subject: use stdin

---
 Makefile         |  6 +++-
 README           |  2 +-
 sass.c           | 85 +++++++++++++++++++++++++++++++++++++++++++++++++-------
 test.css.correct | 14 ++++++++++
 test.scss        | 18 ++++++++++++
 5 files changed, 113 insertions(+), 12 deletions(-)
 create mode 100644 test.css.correct
 create mode 100644 test.scss

diff --git a/Makefile b/Makefile
index 6922f76..3d0c08e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,7 @@
 all:
-	gcc sass.c -I ./libsass/  ./libsass/libsass.a -o sass -lstdc++
+	gcc sass.c -I ./libsass/  ./libsass/libsass.a -o sass -lstdc++ -O2 -march=native
+	@echo "Testing Sass"
+	@./sass < test.scss > test.css
+	@diff test.css test.css.correct || echo -e "\e[0;31merror: sass isn't compiling properly" && echo "ok"
+
 
diff --git a/README b/README
index c7268e6..4daa07a 100644
--- a/README
+++ b/README
@@ -2,4 +2,4 @@ simple sass wrapper.
 
 USAGE:
 
-sass myfile.sass > myfile.css
+sass < myfile.sass > myfile.css
diff --git a/sass.c b/sass.c
index dde8409..4e2da6a 100644
--- a/sass.c
+++ b/sass.c
@@ -1,27 +1,92 @@
 #include <sass_interface.h>
 #include <stdio.h>
 #include <unistd.h>
+#include <strings.h>
+#include <errno.h>
 #include <stdlib.h>
 
+// a function to chomp stdin
+char * chomp_stdin() {
+  
+  const size_t read_size = 256;
+  size_t pos = 0;
+  size_t space_left = read_size;
+  size_t buf_size = read_size;
 
+  char *buf = malloc(read_size);
+
+  while(!feof(stdin)) {
+    size_t bytes_read = 0;
+
+    bytes_read = fread(buf + pos, sizeof(char), space_left, stdin);
+
+    if(ferror(stdin) || bytes_read == 0) {
+      break;
+    }
+
+    pos += bytes_read;
+    space_left = buf_size - pos;
+    
+    
+    if(space_left == 0) {
+      buf = realloc(buf, buf_size + read_size);
+      if(buf == NULL)
+        fprintf(stderr, "%s\n", strerror(errno));
+      buf_size += read_size;
+      space_left = read_size;
+    }
+  }
+
+  // if we didn't read anything, just return NULL;
+  if(pos == 0) {
+    free(buf);
+    return NULL;
+  }
+
+  // gotta throw a null terminator there
+  if (space_left != 0) {
+    buf[pos+1] = '\0';
+  } 
+  else {
+    buf = realloc(buf, buf_size + read_size);
+    if(buf == NULL)
+      fprintf(stderr, "%s\n", strerror(errno));
+    buf[pos+1] = '\0';
+  }
+
+  return buf;
+
+}
 int main (int argc, char **argv) {
-  struct sass_file_context *ctx = sass_new_file_context();
-  ctx->input_path = argv[1];
-  sass_compile_file(ctx);
+ 
+  // load up our stdin
+  char *input = chomp_stdin();
+  if(input == NULL) {
+    exit(1);
+  }
+
+  // setup our parsing context
+  struct sass_context *ctx = sass_new_context();
+  ctx->source_string = input;
+
+  // parse
+  sass_compile(ctx);
+
+  // error check
 	if (ctx->error_status) {
-		if (ctx->error_message) {
+		if (ctx->error_message) 
 			fprintf(stderr,"%s\n", ctx->error_message);
-		}
-		else {
+		else 
 			fprintf(stderr,"An error occured; no error message available\n");
-		}
-		return 1;
-	}
 
+		return ctx->error_status;
+	}
 	else if (ctx->output_string) {
     fprintf(stdout, "%s", ctx->output_string);
   }
 
-  sass_free_file_context(ctx);
+  sass_free_context(ctx);
+  free(input);
+
   return 0;
 }
diff --git a/test.css.correct b/test.css.correct
new file mode 100644
index 0000000..c076b87
--- /dev/null
+++ b/test.css.correct
@@ -0,0 +1,14 @@
+div {
+  color: yellow;
+  background: #7b2d06;
+  flah: #111111;
+  grah: rgba(255, 0, 238, 0.5);
+  blah: rgba(1, 2, 3, 0.6);
+  floo: cyan;
+  bloo: rgba(0, 255, 255, 0.7);
+  groo: cyan;
+  hoo: 123;
+  moo: 45;
+  poo: 6;
+  goo: rgba(63, 0, 191, 0.75);
+  boo: #edcba9; }
diff --git a/test.scss b/test.scss
new file mode 100644
index 0000000..41f89c8
--- /dev/null
+++ b/test.scss
@@ -0,0 +1,18 @@
+$x: rgb(0, 255, 255);
+div {
+color: rgb(255, $blue: 0, $green: 255);
+background: rgb(123, 45, 6);
+flah: rgba(0, 0, 0, 1) + #111;
+grah: rgba(#f0e, $alpha: .5);
+blah: rgba(1,2,3,.6);
+floo: $x;
+bloo: rgba($x, 0.7);
+groo: $x;
+$x: rgb(123, 45, 6);
+hoo: red($x);
+moo: green($x);
+poo: blue($x);
+goo: mix(rgba(255, 0, 0, 0.5), #00f);
+boo: invert(#123456);
+}
+
-- 
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