Add a file getline() function to parse files one line at a time

renderdoc/os/os_specific.h

@@ -242,6 +242,8 @@ FILE *fopen(const char *filename, const char *mode);
 size_t fread(void *buf, size_t elementSize, size_t count, FILE *f);
 size_t fwrite(const void *buf, size_t elementSize, size_t count, FILE *f);
 
+std::string getline(FILE *f);
+
 uint64_t ftell64(FILE *f);
 void fseek64(FILE *f, uint64_t offset, int origin);
 

renderdoc/os/posix/posix_stringio.cpp

@@ -249,6 +249,26 @@ FILE *fopen(const char *filename, const char *mode)
   return ::fopen(filename, mode);
 }
 
+string getline(FILE *f)
+{
+  string ret;
+
+  while(!FileIO::feof(f))
+  {
+    char c = (char)::fgetc(f);
+
+    if(FileIO::feof(f))
+      break;
+
+    if(c != 0 && c != '\n')
+      ret.push_back(c);
+    else
+      break;
+  }
+
+  return ret;
+}
+
 size_t fread(void *buf, size_t elementSize, size_t count, FILE *f)
 {
   return ::fread(buf, elementSize, count, f);

renderdoc/os/win32/win32_stringio.cpp

@@ -343,6 +343,26 @@ FILE *fopen(const char *filename, const char *mode)
   return ret;
 }
 
+string getline(FILE *f)
+{
+  string ret;
+
+  while(!FileIO::feof(f))
+  {
+    char c = (char)::fgetc(f);
+
+    if(FileIO::feof(f))
+      break;
+
+    if(c != 0 && c != '\n')
+      ret.push_back(c);
+    else
+      break;
+  }
+
+  return ret;
+}
+
 size_t fread(void *buf, size_t elementSize, size_t count, FILE *f)
 {
   return ::fread(buf, elementSize, count, f);