From: notaz <notasas@gmail.com>
Date: Thu, 20 Mar 2008 21:33:15 +0000 (+0000)
Subject: files for cfg stuff
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c51bd2feb382b1d1f4bd8aaeaf128e04bd0e147b;p=libpicofe.git

files for cfg stuff

git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@391 be3aeb3a-fb24-0410-a615-afba39da0efa
---

diff --git a/common/config.c b/common/config.c
new file mode 100644
index 0000000..325baf1
--- /dev/null
+++ b/common/config.c
@@ -0,0 +1,529 @@
+/*
+ * Human-readable config file management for PicoDrive
+ * (c)
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include "config.h"
+#include "menu.h"
+#include "emu.h"
+#include <Pico/Pico.h>
+
+extern menu_entry opt_entries[];
+extern menu_entry opt2_entries[];
+extern menu_entry cdopt_entries[];
+extern const int opt_entry_count;
+extern const int opt2_entry_count;
+extern const int cdopt_entry_count;
+
+static menu_entry *cfg_opts[] = { opt_entries, opt2_entries, cdopt_entries };
+static const int *cfg_opt_counts[] = { &opt_entry_count, &opt2_entry_count, &cdopt_entry_count };
+
+#define NL "\n"
+
+
+static int seek_sect(FILE *f, const char *section)
+{
+	char line[128], *tmp;
+	int len;
+
+	len = strlen(section);
+	// seek to the section needed
+	while (!feof(f))
+	{
+		tmp = fgets(line, sizeof(line), f);
+		if (tmp == NULL) break;
+
+		if (line[0] != '[') continue; // not section start
+		if (strncmp(line + 1, section, len) == 0 && line[len+1] == ']')
+			return 1; // found it
+	}
+
+	return 0;
+}
+
+
+static void custom_write(FILE *f, const menu_entry *me)
+{
+	char *str, str24[24];
+
+	switch (me->id)
+	{
+		case MA_OPT_RENDERER:
+			if (!((defaultConfig.s_PicoOpt^PicoOpt)&0x10) &&
+				!((defaultConfig.EmuOpt^currentConfig.EmuOpt)&0x80)) return;
+			if (PicoOpt&0x10)
+				str = "8bit fast";
+			else if (currentConfig.EmuOpt&0x80)
+				str = "16bit accurate";
+			else
+				str = "8bit accurate";
+			fprintf(f, "Renderer = %s", str);
+			break;
+
+		case MA_OPT_SCALING:
+			if (defaultConfig.scaling == currentConfig.scaling) return;
+			switch (currentConfig.scaling) {
+				default: str = "OFF"; break;
+				case 1:  str = "hw horizontal";     break;
+				case 2:  str = "hw horiz. + vert."; break;
+				case 3:  str = "sw horizontal";     break;
+			}
+			fprintf(f, "Scaling = %s", str);
+			break;
+		case MA_OPT_FRAMESKIP:
+			if (defaultConfig.Frameskip == currentConfig.Frameskip) return;
+			if (currentConfig.Frameskip < 0)
+			     strcpy(str24, "Auto");
+			else sprintf(str24, "%i", currentConfig.Frameskip);
+			fprintf(f, "Frameskip = %s", str24);
+			break;
+		case MA_OPT_SOUND_QUALITY:
+			if (!((defaultConfig.s_PicoOpt^PicoOpt)&8) && 
+				defaultConfig.s_PsndRate == PsndRate) return;
+			str = (PicoOpt&0x08)?"stereo":"mono";
+			fprintf(f, "Sound Quality = %i %s", PsndRate, str);
+			break;
+		case MA_OPT_REGION:
+			if (defaultConfig.s_PicoRegion == PicoRegionOverride &&
+				defaultConfig.s_PicoAutoRgnOrder == PicoAutoRgnOrder) return;
+			fprintf(f, "Region = %s", me_region_name(PicoRegionOverride, PicoAutoRgnOrder));
+			break;
+		case MA_OPT_CONFIRM_STATES:
+			if (!((defaultConfig.EmuOpt^currentConfig.EmuOpt)&(5<<9))) return;
+			switch ((currentConfig.EmuOpt >> 9) & 5) {
+				default: str = "OFF";    break;
+				case 1:  str = "writes"; break;
+				case 4:  str = "loads";  break;
+				case 5:  str = "both";   break;
+			}
+			fprintf(f, "Confirm savestate = %s", str);
+			break;
+		case MA_OPT_CPU_CLOCKS:
+			if (defaultConfig.CPUclock == currentConfig.CPUclock) return;
+			fprintf(f, "GP2X CPU clocks = %i", currentConfig.CPUclock);
+			break;
+		case MA_OPT2_GAMMA:
+			if (defaultConfig.gamma == currentConfig.gamma) return;
+			fprintf(f, "Gamma correction = %.3f", (double)currentConfig.gamma / 100.0);
+			break;
+		case MA_OPT2_SQUIDGEHACK:
+			if (!((defaultConfig.EmuOpt^currentConfig.EmuOpt)&0x0010)) return;
+			fprintf(f, "Squidgehack = %i", (currentConfig.EmuOpt&0x0010)>>4);
+			break;
+		case MA_CDOPT_READAHEAD:
+			if (defaultConfig.s_PicoCDBuffers == PicoCDBuffers) return;
+			sprintf(str24, "%i", PicoCDBuffers * 2);
+			fprintf(f, "ReadAhead buffer = %s", str24);
+			break;
+
+		default:
+			printf("unhandled custom_write: %i\n", me->id);
+			return;
+	}
+	fprintf(f, NL);
+}
+
+
+int config_writesect(const char *fname, const char *section)
+{
+	FILE *fo = NULL, *fn = NULL; // old and new
+	menu_entry *me;
+	int t, i, tlen, ret;
+	char line[128], *tmp;
+
+	if (section != NULL)
+	{
+		fo = fopen(fname, "r");
+		if (fo == NULL) {
+			fn = fopen(fname, "w");
+			goto write;
+		}
+
+		ret = seek_sect(fo, section);
+		if (!ret) {
+			// sect not found, we can simply append
+			fclose(fo); fo = NULL;
+			fn = fopen(fname, "a");
+			goto write;
+		}
+
+		// use 2 files..
+		fclose(fo);
+		rename(fname, "tmp.cfg");
+		fo = fopen("tmp.cfg", "r");
+		fn = fopen(fname, "w");
+		if (fo == NULL || fn == NULL) goto write;
+
+		// copy everything until sect
+		tlen = strlen(section);
+		while (!feof(fo))
+		{
+			tmp = fgets(line, sizeof(line), fo);
+			if (tmp == NULL) break;
+
+			if (line[0] == '[' && strncmp(line + 1, section, tlen) == 0 && line[tlen+1] == ']')
+				break;
+			fputs(line, fn);
+		}
+
+		// now skip to next sect
+		while (!feof(fo))
+		{
+			tmp = fgets(line, sizeof(line), fo);
+			if (tmp == NULL) break;
+			if (line[0] == '[') {
+				fseek(fo, -strlen(line), SEEK_CUR);
+				break;
+			}
+		}
+		if (feof(fo))
+		{
+			fclose(fo); fo = NULL;
+			remove("tmp.cfg");
+		}
+	}
+	else
+	{
+		fn = fopen(fname, "w");
+	}
+
+write:
+	if (fn == NULL) {
+		if (fo) fclose(fo);
+		return -1;
+	}
+	if (section != NULL)
+		fprintf(fn, "[%s]" NL, section);
+
+	for (t = 0; t < sizeof(cfg_opts) / sizeof(cfg_opts[0]); t++)
+	{
+		me = cfg_opts[t];
+		tlen = *(cfg_opt_counts[t]);
+		for (i = 0; i < tlen; i++, me++)
+		{
+			if (!me->need_to_save) continue;
+			if ((me->beh != MB_ONOFF && me->beh != MB_RANGE) || me->name == NULL)
+				custom_write(fn, me);
+			else if (me->beh == MB_ONOFF)
+				fprintf(fn, "%s = %i" NL, me->name, (*(int *)me->var & me->mask) ? 1 : 0);
+			else if (me->beh == MB_RANGE)
+				fprintf(fn, "%s = %i" NL, me->name, *(int *)me->var);
+		}
+	}
+	fprintf(fn, NL);
+
+	if (fo != NULL)
+	{
+		// copy whatever is left
+		while (!feof(fo))
+		{
+			tmp = fgets(line, sizeof(line), fo);
+			if (tmp == NULL) break;
+
+			fputs(line, fn);
+		}
+		fclose(fo);
+		remove("tmp.cfg");
+	}
+
+	fclose(fn);
+	return 0;
+}
+
+
+static void mystrip(char *str)
+{
+	int i, len;
+
+	len = strlen(str);
+	for (i = 0; i < len; i++)
+		if (str[i] != ' ') break;
+	if (i > 0) memmove(str, str + i, len - i + 1);
+	len = strlen(str);
+	for (i = len - 1; i >= 0; i--)
+		if (str[i] != ' ') break;
+	str[i+1] = 0;
+}
+
+
+int config_writelrom(const char *fname)
+{
+	char line[128], *tmp, *optr = NULL;
+	char *old_data = NULL;
+	int size;
+	FILE *f;
+
+	if (strlen(currentConfig.lastRomFile) == 0) return 0;
+
+	f = fopen(fname, "r");
+	if (f != NULL)
+	{
+		fseek(f, 0, SEEK_END);
+		size = ftell(f);
+		fseek(f, 0, SEEK_SET);
+		old_data = malloc(size + size/8);
+		if (old_data != NULL)
+		{
+			optr = old_data;
+			while (!feof(f))
+			{
+				tmp = fgets(line, sizeof(line), f);
+				if (tmp == NULL) break;
+				mystrip(line);
+				if (strncasecmp(line, "LastUsedROM", 11) == 0)
+					continue;
+				sprintf(optr, "%s", line);
+				optr += strlen(optr);
+			}
+		}
+		fclose(f);
+	}
+
+	f = fopen(fname, "w");
+	if (f == NULL) return -1;
+
+	if (old_data != NULL) {
+		fwrite(old_data, 1, optr - old_data, f);
+		free(old_data);
+	}
+	fprintf(f, "LastUsedROM = %s" NL, currentConfig.lastRomFile);
+	fclose(f);
+	return 0;
+}
+
+
+static int custom_read(menu_entry *me, const char *var, const char *val)
+{
+	char *tmp;
+	int tmpi;
+
+	switch (me->id)
+	{
+		case MA_OPT_RENDERER:
+			if (strcasecmp(var, "Renderer") != 0) return 0;
+			if      (strcasecmp(val, "8bit fast") == 0) {
+				PicoOpt |=  0x10;
+			}
+			else if (strcasecmp(val, "16bit accurate") == 0) {
+				PicoOpt &= ~0x10;
+				currentConfig.EmuOpt |=  0x80;
+			}
+			else if (strcasecmp(val, "8bit accurate") == 0) {
+				PicoOpt &= ~0x10;
+				currentConfig.EmuOpt &= ~0x80;
+			}
+			else
+				return 0;
+			return 1;
+
+		case MA_OPT_SCALING:
+			if (strcasecmp(var, "Scaling") != 0) return 0;
+			if        (strcasecmp(val, "OFF") == 0) {
+				currentConfig.scaling = 0;
+			} else if (strcasecmp(val, "hw horizontal") == 0) {
+				currentConfig.scaling = 1;
+			} else if (strcasecmp(val, "hw horiz. + vert.") == 0) {
+				currentConfig.scaling = 2;
+			} else if (strcasecmp(val, "sw horizontal") == 0) {
+				currentConfig.scaling = 3;
+			} else
+				return 0;
+			return 1;
+
+		case MA_OPT_FRAMESKIP:
+			if (strcasecmp(var, "Frameskip") != 0) return 0;
+			if (strcasecmp(val, "Auto") == 0)
+			     currentConfig.Frameskip = -1;
+			else currentConfig.Frameskip = atoi(val);
+			return 1;
+
+		case MA_OPT_SOUND_QUALITY:
+			if (strcasecmp(var, "Sound Quality") != 0) return 0;
+			PsndRate = strtoul(val, &tmp, 10);
+			if (PsndRate < 8000 || PsndRate > 44100)
+				PsndRate = 22050;
+			while (*tmp == ' ') tmp++;
+			if        (strcasecmp(tmp, "stereo") == 0) {
+				PicoOpt |=  8;
+			} else if (strcasecmp(tmp, "mono") == 0) {
+				PicoOpt &= ~8;
+			} else
+				return 0;
+			return 1;
+
+		case MA_OPT_REGION:
+			if (strcasecmp(var, "Region") != 0) return 0;
+			if       (strncasecmp(val, "Auto: ", 6) == 0)
+			{
+				const char *p = val + 5, *end = val + strlen(val);
+				int i;
+				PicoRegionOverride = PicoAutoRgnOrder = 0;
+				for (i = 0; p < end && i < 3; p += 3, i++) {
+					if        (p[0] == 'J' && p[1] == 'P') {
+						PicoAutoRgnOrder |= 1 << (i*4);
+					} else if (p[0] == 'U' && p[1] == 'S') {
+						PicoAutoRgnOrder |= 4 << (i*4);
+					} else if (p[0] == 'E' && p[1] == 'U') {
+						PicoAutoRgnOrder |= 8 << (i*4);
+					}
+				}
+			}
+			else   if (strcasecmp(val, "Auto") == 0) {
+				PicoRegionOverride = 0;
+			} else if (strcasecmp(val, "Japan NTSC") == 0) {
+				PicoRegionOverride = 1;
+			} else if (strcasecmp(val, "Japan PAL") == 0) {
+				PicoRegionOverride = 2;
+			} else if (strcasecmp(val, "USA") == 0) {
+				PicoRegionOverride = 4;
+			} else if (strcasecmp(val, "Europe") == 0) {
+				PicoRegionOverride = 8;
+			} else
+				return 0;
+			return 1;
+
+		case MA_OPT_CONFIRM_STATES:
+			if (strcasecmp(var, "Confirm savestate") != 0) return 0;
+			if        (strcasecmp(val, "OFF") == 0) {
+				currentConfig.EmuOpt &= 5<<9;
+			} else if (strcasecmp(val, "writes") == 0) {
+				currentConfig.EmuOpt &= 5<<9;
+				currentConfig.EmuOpt |= 1<<9;
+			} else if (strcasecmp(val, "loads") == 0) {
+				currentConfig.EmuOpt &= 5<<9;
+				currentConfig.EmuOpt |= 4<<9;
+			} else if (strcasecmp(val, "both") == 0) {
+				currentConfig.EmuOpt &= 5<<9;
+				currentConfig.EmuOpt |= 5<<9;
+			} else
+				return 0;
+			return 1;
+
+		case MA_OPT_CPU_CLOCKS:
+			if (strcasecmp(var, "GP2X CPU clocks") != 0) return 0;
+			currentConfig.CPUclock = atoi(val);
+			return 1;
+
+		case MA_OPT2_GAMMA:
+			if (strcasecmp(var, "Gamma correction") != 0) return 0;
+			currentConfig.gamma = (int) (atof(val) * 100.0);
+			return 1;
+
+		case MA_OPT2_SQUIDGEHACK:
+			if (strcasecmp(var, "Squidgehack") != 0) return 0;
+			tmpi = atoi(val);
+			if (tmpi) *(int *)me->var |=  me->mask;
+			else      *(int *)me->var &= ~me->mask;
+			return 1;
+
+		case MA_CDOPT_READAHEAD:
+			if (strcasecmp(var, "ReadAhead buffer") != 0) return 0;
+			PicoCDBuffers = atoi(val) / 2;
+			return 1;
+
+		default:
+			if (strcasecmp(var, "LastUsedROM") == 0) {
+				tmpi = sizeof(currentConfig.lastRomFile);
+				strncpy(currentConfig.lastRomFile, val, tmpi);
+				currentConfig.lastRomFile[tmpi-1] = 0;
+				return 1;
+			}
+			printf("unhandled custom_read: %i\n", me->id);
+			return 0;
+	}
+}
+
+
+static void parse(const char *var, const char *val)
+{
+	menu_entry *me;
+	int t, i, tlen, tmp, ret = 0;
+
+	for (t = 0; t < sizeof(cfg_opts) / sizeof(cfg_opts[0]) && ret == 0; t++)
+	{
+		me = cfg_opts[t];
+		tlen = *(cfg_opt_counts[t]);
+		for (i = 0; i < tlen && ret == 0; i++, me++)
+		{
+			if (!me->need_to_save) continue;
+			if (me->name != NULL) {
+				if (strcasecmp(var, me->name) != 0) continue; // surely not this one
+				if (me->beh == MB_ONOFF) {
+					tmp = atoi(val);
+					if (tmp) *(int *)me->var |=  me->mask;
+					else     *(int *)me->var &= ~me->mask;
+					return;
+				} else if (me->beh == MB_RANGE) {
+					tmp = atoi(val);
+					if (tmp < me->min) tmp = me->min;
+					if (tmp > me->max) tmp = me->max;
+					*(int *)me->var = tmp;
+					return;
+				}
+			}
+			ret = custom_read(me, var, val);
+		}
+	}
+	if (!ret) printf("config_readsect: unhandled var: %s\n", var);
+}
+
+
+int config_readsect(const char *fname, const char *section)
+{
+	char line[128], *var, *val, *tmp;
+	FILE *f = fopen(fname, "r");
+	int len, i, ret;
+
+	if (f == NULL) return 0;
+
+	if (section != NULL)
+	{
+		ret = seek_sect(f, section);
+		if (!ret) {
+			printf("config_readsect: %s: missing section [%s]\n", fname, section);
+			fclose(f);
+			return -1;
+		}
+	}
+
+	while (!feof(f))
+	{
+		tmp = fgets(line, sizeof(line), f);
+		if (tmp == NULL) break;
+
+		if (line[0] == '[') break; // other section
+
+		// strip comments, linefeed, spaces..
+		len = strlen(line);
+		for (i = 0; i < len; i++)
+			if (line[i] == '#' || line[i] == '\r' || line[i] == '\n') { line[i] = 0; break; }
+		mystrip(line);
+		len = strlen(line);
+		if (len <= 0) continue;
+
+		// get var and val
+		for (i = 0; i < len; i++)
+			if (line[i] == '=') break;
+		if (i >= len || strchr(&line[i+1], '=') != NULL) {
+			printf("config_readsect: can't parse: %s\n", line);
+			continue;
+		}
+		line[i] = 0;
+		var = line;
+		val = &line[i+1];
+		mystrip(var);
+		mystrip(val);
+		if (strlen(var) == 0 || strlen(val) == 0) {
+			printf("config_readsect: something's empty: \"%s\" = \"%s\"\n", var, val);
+			continue;
+		}
+
+		parse(var, val);
+	}
+
+	fclose(f);
+	return 0;
+}
+
diff --git a/common/config.h b/common/config.h
new file mode 100644
index 0000000..8fab6d4
--- /dev/null
+++ b/common/config.h
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int config_writesect(const char *fname, const char *section);
+int config_writelrom(const char *fname);
+int config_readsect(const char *fname, const char *section);
+