replace getline with fgets for portability

BUG=

Review URL: https://codereview.appspot.com/7085058

git-svn-id: http://skia.googlecode.com/svn/trunk@7163 2bbb7eff-a529-9590-31e7-b0007b416f81

include/core/SkOSFile.h

@@ -43,6 +43,9 @@ bool    sk_frewind(SkFILE*);
 
 size_t  sk_fread(void* buffer, size_t byteCount, SkFILE*);
 size_t  sk_fwrite(const void* buffer, size_t byteCount, SkFILE*);
+
+char*   sk_fgets(char* str, int size, SkFILE* f);
+
 void    sk_fflush(SkFILE*);
 
 int     sk_fseek(SkFILE*, size_t, int);
@@ -54,12 +57,6 @@ bool    sk_exists(const char *path);
 // Returns true if a directory exists at this path.
 bool    sk_isdir(const char *path);
 
-// Get a single line of input from a file.  Returns -1 on failure.
-// passing NULL for lineptr will allocate memory for the line with
-// sk_malloc; make sure to use sk_free to get rid of it when you're
-// done.
-ptrdiff_t sk_getline(char **lineptr, size_t *n, SkFILE *stream);
-
 // Have we reached the end of the file?
 int sk_feof(SkFILE *);
 

src/ports/SkOSFile_stdio.cpp

@@ -41,19 +41,11 @@ SkFILE* sk_fopen(const char path[], SkFILE_Flags flags)
     return f;
 }
 
-ptrdiff_t sk_getline(char **lineptr, size_t *n, SkFILE *f) {
-    bool make_private_copy = (NULL == *lineptr);
-
-    ptrdiff_t ret = ::getline(lineptr, n, (FILE *) f);
-    if (make_private_copy) {
-        char *local_copy = (char *) sk_malloc_throw(strlen(*lineptr) + 1);
-        ::memcpy(local_copy, *lineptr, strlen(*lineptr));
-        ::free(*lineptr);
-        *lineptr = local_copy;
-    }
-    return ret;
+char* sk_fgets(char* str, int size, SkFILE* f) {
+    return ::fgets(str, size, (FILE *)f);
 }
 
+
 int sk_feof(SkFILE *f) {
     return ::feof((FILE *)f);
 }

src/utils/SkRTConf.cpp

@@ -16,29 +16,23 @@ SkRTConfRegistry::SkRTConfRegistry(): fConfs(100) {
         return;
     }
     
-    char *line = NULL;
-    size_t n = 0;
+    char line[1024];
     
     while (!sk_feof(fp)) {
-        if (line) {
-            sk_free(line);
-        }
-        line = NULL;
         
-        if (sk_getline(&line, &n, fp) == -1) break;
+        if (!sk_fgets(line, sizeof(line), fp)) {
+            break;
+        }
                 
         char *commentptr = strchr(line, '#');
         if (commentptr == line) {
             continue;
         }
         if (NULL != commentptr) {
-            char *tmp = (char *) sk_malloc_throw(commentptr-line+1);
-            strncpy(tmp, line, commentptr-line);
-            sk_free(line);
-            line = tmp;
+            *commentptr = '\0';
         }
         
-        char sep[] = " \t";
+        char sep[] = " \t\r\n";
         
         char *keyptr = strtok(line, sep);
         if (!keyptr) {