osh.h

commit 94a27bfc769e307458b40c6c2b6c31483eced237
parent a8cfbfd6b21a26ee790d6fd828f55ce0ce8ab924
Author: Oshgnacknak <osh@oshgnacknak.de>
Date:   Mon,  7 Mar 2022 14:17:31 +0100

Add fileContentAsBuffer procedure and example

Diffstat:
A
examples/file_content_as_buffer.cpp
 | 
20
++++++++++++++++++++
M
osh.h
 | 
17
+++++++++++++++++

2 files changed, 37 insertions(+), 0 deletions(-)
diff --git a/examples/file_content_as_buffer.cpp b/examples/file_content_as_buffer.cpp
@@ -0,0 +1,20 @@
+#include "osh.h"
+
+using namespace osh;
+
+int main() {
+    StringBuffer sb = fileContentAsBuffer(__FILE__);
+    auto destruct_sb = autoDestruct(sb);
+
+    printp(sb, "\n");
+    printp(sb, "void foo() {\n");
+    printp(sb, "    println(\"Hallo Welt\");\n");
+    printp(sb, "}\n");
+
+    println(sb);
+
+    return 0; 
+}
+
+#define OSH_H_IMPLEMENTATION
+#include "osh.h"
diff --git a/osh.h b/osh.h
@@ -112,6 +112,8 @@ namespace osh {
 
     void print1(Formatter auto&, const StringBuffer&);
 
+    StringBuffer fileContentAsBuffer(const char* filename);
+
     int listIndex(int index, const int& size);
 
     template<typename T>
@@ -370,6 +372,21 @@ namespace osh {
         printp(fmt, s.cstr());
     }
 
+    StringBuffer fileContentAsBuffer(const char* filename) {
+        FILE* f = fopen(filename, "r");
+        assert(f != NULL);
+
+        fseek(f, 0, SEEK_END);
+        int capacity = ftell(f);
+        StringBuffer s(capacity);
+        
+        rewind(f);
+        int read = fread(s.cstr(), sizeof(char), capacity, f);
+        assert(read == capacity);
+        
+        s.setSize(capacity);
+        return s;
+    }
 
     int listIndex(int index, const int& size) {
         assert(index >= -size && index < size,