[vte] [interpret] Make the interpret app interactive

[Behdad Esfahbod <behdad src gnome org>]

commit e25247345d6c075a131a90cb2c65471811a89c64
Author: Behdad Esfahbod <behdad behdad org>
Date:   Sun Nov 22 15:24:28 2009 -0500

    [interpret] Make the interpret app interactive

 src/interpret.c |  147 ++++++++++++++++++++++++++++---------------------------
 1 files changed, 75 insertions(+), 72 deletions(-)
---
diff --git a/src/interpret.c b/src/interpret.c
index cfdbd44..6bf155b 100644
--- a/src/interpret.c
+++ b/src/interpret.c
@@ -26,6 +26,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <fcntl.h>
 #include <glib.h>
 #include <glib-object.h>
 #include "caps.h"
@@ -40,13 +41,12 @@ main(int argc, char **argv)
 	char *terminal = NULL;
 	struct _vte_matcher *matcher = NULL;
 	struct _vte_termcap *termcap = NULL;
-	VteBuffer *buffer = NULL;
 	GArray *array;
 	unsigned int i, j;
 	int l;
-	char b;
+	unsigned char buf[4096];
 	GValue *value;
-	FILE *infile = NULL;
+	int infile;
 	struct _vte_iso2022_state *subst;
 	const char *tmp;
 	GQuark quark;
@@ -60,14 +60,14 @@ main(int argc, char **argv)
 	}
 
 	if ((argc > 2) && (strcmp(argv[2], "-") != 0)) {
-		infile = fopen(argv[2], "r");
-		if (infile == NULL) {
+		infile = open (argv[2], O_RDONLY);
+		if (infile == -1) {
 			g_print("error opening %s: %s\n", argv[2],
 				strerror(errno));
 			exit(1);
 		}
 	} else {
-		infile = stdin;
+		infile = 1;
 	}
 
 	g_type_init();
@@ -77,90 +77,93 @@ main(int argc, char **argv)
 	if (termcap == NULL) {
 		termcap = _vte_termcap_new("/etc/termcap");
 	}
-	buffer = _vte_buffer_new();
 	array = g_array_new(FALSE, FALSE, sizeof(gunichar));
 
 	matcher = _vte_matcher_new(terminal, termcap);
 
 	subst = _vte_iso2022_state_new(NULL, NULL, NULL);
 
-	while (fread(&b, 1, 1, infile) == 1) {
-		_vte_buffer_append(buffer, &b, 1);
-	}
-	_vte_iso2022_process(subst, buffer->data,
-			_vte_buffer_length(buffer), array);
-
-	i = 0;
-	while (i <= array->len) {
-		tmp = NULL;
-		values = NULL;
-		for (j = 1; j < (array->len - i); j++) {
-			_vte_matcher_match(matcher,
-					   &g_array_index(array, gunichar, i),
-					   j,
-					   &tmp,
-					   NULL,
-					   &quark,
-					   &values);
-			if ((tmp == NULL) || (strlen(tmp) > 0)) {
-				break;
-			}
-		}
-		if (i + j == array->len) {
-			g_print("End of data.\n");
+	for (;;) {
+		l = read (infile, buf, sizeof (buf));
+		if (!l)
 			break;
+		if (l == -1) {
+			if (errno == EAGAIN)
+				continue;
+			exit (1);
 		}
-		if (tmp == NULL) {
-			gunichar c;
-			c = g_array_index(array, gunichar, i);
-			if (VTE_ISO2022_HAS_ENCODED_WIDTH(c)) {
-				c &= ~VTE_ISO2022_ENCODED_WIDTH_MASK;
-			}
-			if (c < 32) {
-				g_print("`^%c'\n", c + 64);
-			} else
-			if (c < 127) {
-				g_print("`%c'\n", c);
-			} else {
-				g_print("`0x%x'\n", c);
-			}
-			i++;
-			continue;
-		}
+		g_array_set_size (array, 0);
+		_vte_iso2022_process(subst, buf, (unsigned int) l, array);
 
-		l = j;
-		g_print("%s(", g_quark_to_string(quark));
-		for (j = 0; (values != NULL) && (j < values->n_values); j++) {
-			if (j > 0) {
-				g_print(", ");
+		i = 0;
+		while (i <= array->len) {
+			tmp = NULL;
+			values = NULL;
+			for (j = 1; j < (array->len - i); j++) {
+				_vte_matcher_match(matcher,
+						   &g_array_index(array, gunichar, i),
+						   j,
+						   &tmp,
+						   NULL,
+						   &quark,
+						   &values);
+				if ((tmp == NULL) || (strlen(tmp) > 0)) {
+					break;
+				}
+			}
+			if (i + j == array->len) {
+				break;
 			}
-			value = g_value_array_get_nth(values, j);
-			if (G_VALUE_HOLDS_LONG(value)) {
-				g_print("%ld", g_value_get_long(value));
+			if (tmp == NULL) {
+				gunichar c;
+				c = g_array_index(array, gunichar, i);
+				if (VTE_ISO2022_HAS_ENCODED_WIDTH(c)) {
+					c &= ~VTE_ISO2022_ENCODED_WIDTH_MASK;
+				}
+				if (c < 32) {
+					g_print("`^%c'\n", c + 64);
+				} else
+				if (c < 127) {
+					g_print("`%c'\n", c);
+				} else {
+					g_print("`0x%x'\n", c);
+				}
+				i++;
+				continue;
 			}
-			if (G_VALUE_HOLDS_STRING(value)) {
-				g_print("`%s'",
-				        g_value_get_string(value));
+
+			l = j;
+			g_print("%s(", g_quark_to_string(quark));
+			for (j = 0; (values != NULL) && (j < values->n_values); j++) {
+				if (j > 0) {
+					g_print(", ");
+				}
+				value = g_value_array_get_nth(values, j);
+				if (G_VALUE_HOLDS_LONG(value)) {
+					g_print("%ld", g_value_get_long(value));
+				}
+				if (G_VALUE_HOLDS_STRING(value)) {
+					g_print("`%s'",
+						g_value_get_string(value));
+				}
+				if (G_VALUE_HOLDS_POINTER(value)) {
+					g_print("`%ls'",
+						(wchar_t*)
+						g_value_get_pointer(value));
+				}
 			}
-			if (G_VALUE_HOLDS_POINTER(value)) {
-				g_print("`%ls'",
-				        (wchar_t*)
-				        g_value_get_pointer(value));
+			if (values != NULL) {
+				_vte_matcher_free_params_array(matcher, values);
 			}
+			g_print(")\n");
+			i += l;
 		}
-		if (values != NULL) {
-			_vte_matcher_free_params_array(matcher, values);
-		}
-		g_print(")\n");
-		i += l;
 	}
+	g_print("End of data.\n");
 
-	if (infile != stdin) {
-		fclose(infile);
-	}
+	close (infile);
 
 	_vte_iso2022_state_free(subst);
-	_vte_buffer_free(buffer);
 	g_array_free(array, TRUE);
 	_vte_termcap_free(termcap);
 	_vte_matcher_free(matcher);