Merge pull request #8 from xing/add_fmemopen

Inhibit warnings and add fmemopen to this project

.gitignore

@@ -21,13 +21,4 @@ DerivedData
 
 Pods/
 
-.idea/workspace.xml
-.idea/tasks.xml
-
-.idea/dataSources.ids
-.idea/dataSources.xml
-.idea/sqlDataSources.xml
-.idea/dynamic.xml
-*.ipr
-*.iws
-*.iml
+.idea/

Example/Podfile.lock

@@ -1,9 +1,7 @@
 PODS:
   - Expecta (0.3.1)
   - FBSnapshotTestCase (1.4)
-  - fmemopen (0.0.1)
-  - XNGMarkdownParser (0.3.0):
-    - fmemopen
+  - XNGMarkdownParser (0.3.0)
 
 DEPENDENCIES:
   - Expecta (~> 0.3.1)
@@ -17,7 +15,6 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   Expecta: 03aabd0a89d8dea843baecb19a7fd7466a69a31d
   FBSnapshotTestCase: f9f225b5ba11c8d8c09075590490df16314e4d62
-  fmemopen: 54fc0cc9d9063de6103b40a24849818a53c8f1e5
-  XNGMarkdownParser: 562999edfa0e0913dc345f0931bdd78be59f826e
+  XNGMarkdownParser: 8ad6d21f972f2b2301637d842da2f7942faed5a0
 
 COCOAPODS: 0.36.0

XNGMarkdownParser.podspec

@@ -14,7 +14,6 @@ Pod::Spec.new do |s|
   s.author       = { "XING AG" => "[email protected]" }
   s.platform     = :ios, '7.0'
   s.source       = { :git => "https://github.com/xing/XNGMarkdownParser.git", :tag => s.version.to_s }
-  s.source_files = 'src/*.{h,m}'
-  s.dependency 'fmemopen'
+  s.source_files = 'src/*.{h,m,c}'
   s.requires_arc = true
 end

src/fmemopen.c

@@ -0,0 +1,81 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+struct fmem {
+  size_t pos;
+  size_t size;
+  char *buffer;
+};
+typedef struct fmem fmem_t;
+
+static int readfn(void *handler, char *buf, int size) {
+  fmem_t *mem = handler;
+  size_t available = mem->size - mem->pos;
+
+  if (size > available) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wshorten-64-to-32"
+      size = available;
+#pragma clang diagnostic pop
+  }
+  memcpy(buf, mem->buffer + mem->pos, sizeof(char) * size);
+  mem->pos += size;
+
+  return size;
+}
+
+static int writefn(void *handler, const char *buf, int size) {
+  fmem_t *mem = handler;
+  size_t available = mem->size - mem->pos;
+
+  if (size > available) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wshorten-64-to-32"
+      size = available;
+#pragma clang diagnostic pop
+  }
+  memcpy(mem->buffer + mem->pos, buf, sizeof(char) * size);
+  mem->pos += size;
+
+  return size;
+}
+
+static fpos_t seekfn(void *handler, fpos_t offset, int whence) {
+  size_t pos;
+  fmem_t *mem = handler;
+
+  switch (whence) {
+    case SEEK_SET: pos = offset; break;
+    case SEEK_CUR: pos = mem->pos + offset; break;
+    case SEEK_END: pos = mem->size + offset; break;
+    default: return -1;
+  }
+
+  if (pos > mem->size) {
+    return -1;
+  }
+
+  mem->pos = pos;
+  return (fpos_t)pos;
+}
+
+static int closefn(void *handler) {
+  free(handler);
+  return 0;
+}
+
+FILE *fmemopen(void *buf, size_t size, const char *mode) {
+  // This data is released on fclose.
+  fmem_t* mem = (fmem_t *) malloc(sizeof(fmem_t));
+
+  // Zero-out the structure.
+  memset(mem, 0, sizeof(fmem_t));
+
+  mem->size = size;
+  mem->buffer = buf;
+
+  // funopen's man page: https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/funopen.3.html
+  return funopen(mem, readfn, writefn, seekfn, closefn);
+}

src/fmemopen.h

@@ -0,0 +1,15 @@
+#ifndef FMEMOPEN_H_
+#define FMEMOPEN_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+FILE *fmemopen(void *buf, size_t size, const char *mode);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif