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#include "video/nebu_console.h"
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#define CONSOLE_DEPTH 100
#define CONSOLE_WIDTH 80
static char buffer[CONSOLE_DEPTH][CONSOLE_WIDTH];
static int position;
static int offset;
void consoleInit() {
int i;
for(i = 0; i < CONSOLE_DEPTH; i++)
buffer[i][0] = '\0';
position = 0;
offset = 0;
// fprintf(stderr, "console initialized\n");
}
void consoleAddLine(char *text) {
int i = 0, x=0;
while(i < CONSOLE_WIDTH - 1 && text[i] != 0) {
buffer[position][i] = text[i];
i++;
}
buffer[position][i] = '\0';
/* fprintf(stderr, "added \"%s\" to console at buffer[%i] with "
* " offset of %i\n",
* buffer[position], position, offset);
*/
position++;
/* reposition the buffer to avoid overruns - tim */
if(position >= 99){
for(i=0;i<CONSOLE_DEPTH;i++){
strcpy(buffer[x], buffer[i]);
buffer[i][0] = '\0';
++x;
}
position -= 4;
}
}
void consoleDisplay(void(*func)(char *line, int call), int height) {
int i;
int j = 0;
for(i = 0; i < height; i++) {
if(*(buffer[ (position + i - height - offset +
CONSOLE_DEPTH) % CONSOLE_DEPTH ]) != 0)
func(buffer[ (position + i - height - offset +
CONSOLE_DEPTH) % CONSOLE_DEPTH ], j++);
}
}
void consoleScrollForward(int range) {
offset -= range;
if(offset < 0) offset = 0;
}
void consoleScrollBackward(int range) {
offset += range;
if(offset > CONSOLE_DEPTH - 1)
offset = CONSOLE_DEPTH - 1;
}
/*
displayMessage
post a message to the console and/or stdout/stderr.
NOTE: Don't put newlines at the end of the format string,
the function will handle adding them when appropriate.
*/
void displayMessage(outloc_e where, const char *fmt_str, ...) {
char message[CONSOLE_WIDTH];
va_list ap;
va_start(ap, fmt_str);
if (where & TO_CONSOLE) {
vsprintf(message, fmt_str, ap);
consoleAddLine(message);
}
if (where & TO_STDOUT) {
vfprintf(stdout, fmt_str, ap);
fputc('\n', stdout);
}
if (where & TO_STDERR) {
vfprintf(stderr, fmt_str, ap);
fputc('\n', stderr);
}
}
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