X-Git-Url: https://harrygodden.com/git/?p=convexer.git;a=blobdiff_plain;f=cxr%2Fcxr_io.h;fp=cxr%2Fcxr_io.h;h=ed28bb8716018632481cc10a6e402f1bcc60485a;hp=0000000000000000000000000000000000000000;hb=dbd379f76bcb2139fdb5740232511fa789018e10;hpb=8e1b6889db7ce10f8d594539ef74dc4390e8e891

diff --git a/cxr/cxr_io.h b/cxr/cxr_io.h
new file mode 100644
index 0000000..ed28bb8
--- /dev/null
+++ b/cxr/cxr_io.h
@@ -0,0 +1,215 @@
+#ifndef CXR_IO_H
+#define CXR_IO_H
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "cxr_types.h"
+
+/* Read binary or text assets in full from file */
+static void *cxr_asset_read_s( const char *path, i64 *size );
+static void *cxr_asset_read( const char *path );
+static char *cxr_textasset_read_s( const char *path, i64 *size );
+static char *cxr_textasset_read( const char *name );
+
+static i64 cxr_file_size( FILE *fileptr );
+
+/* Path utilities */
+/* Returns pointer to the extension in path */
+static char *cxr_findext( char *path, char const delim );
+static char *cxr_findsep( char *path );
+
+static void cxr_stripext( char *path );
+static int cxr_path_is_abs( char const *path );
+static char *cxr_filename( char *path );
+
+/* Remove one level (nop if can't) eg: /home/harry/test.file -> /home/harry/ */
+static void cxr_downlvl( char *path );
+
+#ifdef _WIN32
+ #define CXR_FOLDER_CHAR '\\'
+#else
+ #define CXR_FOLDER_CHAR '/'
+#endif
+
+static i64 cxr_file_size( FILE *fileptr )
+{
+	fseek( fileptr, 0, SEEK_END );
+	i64 fsize = ftell( fileptr );
+	fseek( fileptr, 0, SEEK_SET );
+	
+	return fsize;
+}
+
+static void *fs_disk_open_read( const char *path, int reserve_end, i64 *size )
+{
+	FILE *f = fopen( path, "rb" );
+	if( f )
+	{
+		i64 fsize = cxr_file_size( f );
+		void *buf = malloc( fsize + reserve_end );
+		
+		if( buf )
+		{
+			if( fread( buf, 1, fsize, f ) != fsize )
+			{
+				free( buf );
+				buf = NULL;
+			}
+		}
+		
+		*size = fsize;
+		
+		fclose( f );
+		return buf;
+	}
+	else
+	{
+		return NULL;
+	}
+}
+
+static char *fs_disk_load_text( const char *path, i64 *size )
+{
+	char *buf;
+	i64 fsize;
+	
+	if( (buf = fs_disk_open_read( path, 1, &fsize )) )
+	{
+		buf[ fsize ] = 0x00;
+		*size = fsize +1;
+		
+		return buf;
+	}
+
+	return NULL;
+}
+
+static void *cxr_asset_read_s( const char *path, i64 *size )
+{
+	return fs_disk_open_read( path, 0, size );
+}
+
+static void *cxr_asset_read( const char *path )
+{
+	i64 size;
+	return fs_disk_open_read( path, 0, &size );
+}
+
+static char *cxr_textasset_read_s( const char *path, i64 *size )
+{
+	return fs_disk_load_text( path, size );
+}
+
+static char *cxr_textasset_read( const char *name )
+{
+	i64 size;
+	return fs_disk_load_text( name, &size );
+}
+
+static char *cxr_findext( char *path, char const delim )
+{
+	char *c, *ptr;
+
+	c = path;
+	ptr = NULL;
+	
+	while( *c )
+	{
+		if( *c == delim )
+		{
+			ptr = c + 1;
+		}
+	
+		c ++;
+	}
+
+	return ptr;
+}
+
+static char *cxr_findsep( char *path )
+{
+	char *c, *ptr;
+
+	c = path;
+	ptr = NULL;
+	
+	while( *c )
+	{
+		if( *c == '/' || *c == '\\' )
+		{
+			ptr = c + 1;
+		}
+	
+		c ++;
+	}
+
+	return ptr;
+}
+
+static void cxr_stripext( char *path )
+{
+	char *point, *start;
+	
+	// Skip folders
+	if( !(start = cxr_findsep( path )) )
+	{
+		start = path;
+	}
+	
+	if( (point = cxr_findext( start, '.' )) )
+	{
+		if( point > path )
+		{
+			*(point-1) = 0x00;
+		}
+	}
+}
+
+static void cxr_downlvl( char *path )
+{
+	char *start_name, *c;
+
+	c = path;
+	while( *c )
+		c ++;
+	int len = c - path;
+	
+	if( len )
+		path[ len -1 ] = 0x00;
+	
+	if( (start_name = cxr_findsep( path ) ))
+		*start_name = 0x00;
+	else
+		path[0] = 0x00;
+}
+
+static char *cxr_filename( char *path )
+{
+	char *base_name;
+	if( (base_name = cxr_findsep( path ) ))
+		return base_name;
+		
+	return path;
+}
+
+static int cxr_path_is_abs( char const *path )
+{
+#ifdef _WIN32
+	if( strlen( path ) < 2 ) return 0;
+	return path[1] == ':';
+#else
+	if( strlen( path ) < 1 ) return 0;
+	return path[0] == '/';
+#endif
+}
+
+static char *cxr_str_clone( char const *str, int extra )
+{
+   char *newstr = malloc(strlen(str)+1+extra);
+   strcpy( newstr, str );
+
+   return newstr;
+}
+
+#endif /* CXR_IO_H */