major engine cleanup. dependency on baselib removed. engine is now C code (not ansi tho). some other cruft removed aswell

1 files changed, 215 insertions, 0 deletions

diff --git a/src/engine/config.c b/src/engine/config.c
new file mode 100644
index 00000000..59c07f3e
--- /dev/null
+++ b/src/engine/config.c
@@ -0,0 +1,215 @@
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "system.h"
+#include "config.h"
+
+
+// buffered stream for reading lines, should perhaps be something smaller
+typedef struct
+{
+	char buffer[4*1024];
+	unsigned buffer_pos;
+	unsigned buffer_size;
+	unsigned buffer_max_size;
+	IOHANDLE io;
+} LINEREADER;
+
+void linereader_init(LINEREADER *lr, IOHANDLE io)
+{
+	lr->buffer_max_size = 4*1024;
+	lr->buffer_size = 0;
+	lr->buffer_pos = 0;
+	lr->io = io;
+}
+
+char *linereader_get(LINEREADER *lr)
+{
+	unsigned line_start = lr->buffer_pos;
+
+	while(1)
+	{
+		if(lr->buffer_pos >= lr->buffer_size)
+		{
+			// fetch more
+
+			// move the remaining part to the front
+			unsigned left = lr->buffer_size - line_start;
+			if(line_start > lr->buffer_size)
+				left = 0;
+			if(left)
+				mem_move(lr->buffer, &lr->buffer[line_start], left);
+			lr->buffer_pos = left;
+
+			// fill the buffer
+			unsigned read = io_read(lr->io, &lr->buffer[lr->buffer_pos], lr->buffer_max_size-lr->buffer_pos);
+			lr->buffer_size = left + read;
+			line_start = 0;
+
+			if(!read)
+			{
+				if(left)
+				{
+					lr->buffer[left] = 0; // return the last line
+					lr->buffer_pos = left;
+					lr->buffer_size = left;
+					return lr->buffer;
+				}
+				else
+					return 0x0; // we are done!
+			}
+		}
+		else
+		{
+			if(lr->buffer[lr->buffer_pos] == '\n' || lr->buffer[lr->buffer_pos] == '\r')
+			{
+				// line found
+				lr->buffer[lr->buffer_pos] = 0;
+				lr->buffer_pos++;
+				return &lr->buffer[line_start];
+			}
+			else
+				lr->buffer_pos++;
+		}
+	}
+}
+
+CONFIGURATION config;
+
+void config_reset()
+{
+    #define MACRO_CONFIG_INT(name,def,min,max) config.name = def;
+    #define MACRO_CONFIG_STR(name,len,def) strncpy(config.name, def, len);
+ 
+    #include "config_variables.h" 
+ 
+    #undef MACRO_CONFIG_INT 
+    #undef MACRO_CONFIG_STR 
+}
+
+void strip_spaces(char **p)
+{
+	char *s = *p;
+	
+	while (*s == ' ')
+		++s;
+
+	char *end = s + strlen(s);
+	while (end > s && *(end - 1) == ' ')
+		*--end = 0;
+}
+
+void config_set(const char *line)
+{
+	const char *c = strchr(line, '=');
+	if (c)
+	{
+		char var[256];
+		char val[256];
+
+		strcpy(val, c+1);
+
+		mem_copy(var, line, c - line);
+		var[c - line] = 0;
+
+		char *var_str = var;
+		char *val_str = val;
+
+		strip_spaces(&var_str);
+		strip_spaces(&val_str);
+
+		#define MACRO_CONFIG_INT(name,def,min,max) { if (strcmp(#name, var_str) == 0) config_set_ ## name (&config, atoi(val_str)); }
+    	#define MACRO_CONFIG_STR(name,len,def) { if (strcmp(#name, var_str) == 0) { config_set_ ## name (&config, val_str); } }
+ 
+    	#include "config_variables.h" 
+ 
+    	#undef MACRO_CONFIG_INT 
+    	#undef MACRO_CONFIG_STR 
+	}
+}
+
+void config_load(const char *filename)
+{
+	char full_path[1024];
+	if (filename[0] == '~')
+	{
+		char *home = getenv("HOME");
+		if (home)
+		{
+			sprintf(full_path, "%s%s", home, filename+1);
+			filename = full_path;
+		}
+	}
+
+	dbg_msg("config/load", "loading %s", filename);
+
+	IOHANDLE file = io_open(filename, IOFLAG_READ);
+	
+	if(file)
+	{
+		char *line;
+		LINEREADER lr;
+		linereader_init(&lr, file);
+
+		while ((line = linereader_get(&lr)))
+			config_set(line);
+
+		io_close(file);
+	}
+}
+
+void config_save(const char *filename)
+{
+	char full_path[1024];
+	if (filename[0] == '~')
+	{
+		char *home = getenv("HOME");
+		if (home)
+		{
+			sprintf(full_path, "%s%s", home, filename+1);
+			filename = full_path;
+		}
+	}
+
+
+	dbg_msg("config/save", "saving config to %s", filename);
+
+	//file_stream file;
+	IOHANDLE file = io_open(filename, IOFLAG_WRITE);
+
+	if(file)
+	{
+#if defined(CONF_FAMILY_WINDOWS)
+		const char newline[] = "\r\n";
+#else
+		const char newline[] = "\n";
+#endif
+		const int newline_len = sizeof(newline)-1;
+		
+    	#define MACRO_CONFIG_INT(name,def,min,max) { char str[256]; sprintf(str, "%s=%i%s", #name, config.name, newline); io_write(file, str, strlen(str)); }
+    	#define MACRO_CONFIG_STR(name,len,def) { io_write(file, #name, strlen(#name)); io_write(file, "=", 1); io_write(file, config.name, strlen(config.name)); io_write(file, newline, newline_len); }
+ 
+    	#include "config_variables.h" 
+ 
+    	#undef MACRO_CONFIG_INT 
+    	#undef MACRO_CONFIG_STR 
+
+		io_close(file);
+	}
+	else
+		dbg_msg("config/save", "couldn't open %s for writing. :(", filename);
+}
+
+#define MACRO_CONFIG_INT(name,def,min,max) int config_get_ ## name (CONFIGURATION *c) { return c->name; }
+#define MACRO_CONFIG_STR(name,len,def) const char *config_get_ ## name (CONFIGURATION *c) { return c->name; }
+#include "config_variables.h"
+#undef MACRO_CONFIG_INT
+#undef MACRO_CONFIG_STR
+
+#define MACRO_CONFIG_INT(name,def,min,max) void config_set_ ## name (CONFIGURATION *c, int val) { if (val < min) val = min; if (max != 0 && val > max) val = max; c->name = val; }
+#define MACRO_CONFIG_STR(name,len,def) void config_set_ ## name (CONFIGURATION *c, const char *str) { strncpy(c->name, str, len-1); c->name[sizeof(c->name)-1] = 0; }
+#include "config_variables.h"
+#undef MACRO_CONFIG_INT
+#undef MACRO_CONFIG_STR