From 2e28873f23d2cf073fdddfecdc278b0f44b2789b Mon Sep 17 00:00:00 2001
From: Alex AUVOLAT <alexis211@gmail.com>
Date: Sun, 20 May 2012 20:20:39 +0200
Subject: Corrected some bugs in readline && multitasking improvement.

---
 src/user/lib/libc/std/readline.c | 107 ++++++++++++++++++++++++---------------
 1 file changed, 66 insertions(+), 41 deletions(-)

(limited to 'src/user')

diff --git a/src/user/lib/libc/std/readline.c b/src/user/lib/libc/std/readline.c
index ab13189..5cd9119 100644
--- a/src/user/lib/libc/std/readline.c
+++ b/src/user/lib/libc/std/readline.c
@@ -81,50 +81,57 @@ char *freadline(FILE f, readline_history *h) {
 		int l = read(f, 0, 16, buf);
 		if (l < 0) return 0;
 
-		if (buf[0] == 27) {
-			if (buf[1] == '[') {
-				if (buf[2] == 'A') {			// up
-					if (lid > 0) {
-						lid--;
-						str = h->str[lid];
-						len = strlen(str);
-						cur = str + len;
+		char *in = buf;
+		while (in < buf + l) {
+			if (*in == 27) {
+				in++;
+				if (*in == '[') {
+					in++;
+					if (*in == 'A') {			// up
+						if (lid > 0) {
+							lid--;
+							str = h->str[lid];
+							len = strlen(str);
+							cur = str + len;
+						}
+					} else if (*in == 'B') {		// down
+						if (lid < h->n - 1) {
+							lid++;
+							str = h->str[lid];
+							len = strlen(str);
+							cur = str + len;
+						}
+					} else if (*in == 'C') {		// forward (right)
+						if (cur < str + len) cur++;
+					} else if (*in == 'D') {		// back (left)
+						if (cur > str) cur--;
 					}
-				} else if (buf[2] == 'B') {		// down
-					if (lid < h->n - 1) {
-						lid++;
-						str = h->str[lid];
-						len = strlen(str);
-						cur = str + len;
-					}
-				} else if (buf[2] == 'C') {		// forward (right)
-					if (cur < str + len) cur++;
-				} else if (buf[2] == 'D') {		// back (left)
-					if (cur > str) cur--;
+				} else {
+					// ALT sequence - ignore
+					in++;
+				}
+			} else if (*in == '\n') {
+				finished = 1;
+				cur = str + len;
+			} else if (*in == '\b') {
+				if (cur > str) {
+					cur--;
+					len--;
+					char* c;
+					for (c = cur; *c != 0; c++) c[0] = c[1];
+				}
+			} else if (*in == '\t') {
+				// ignore tabs -- todo: tab completion???? haha
+			} else if (*in >= ' ') {
+				if (l < 255) {
+					char* c;
+					for (c = cur + len; c >= cur; c--) c[1] = c[0];
+					cur[0] = *in;
+					cur++;
+					len++;
 				}
-			} else {
-				// ALT sequence - ignore
-			}
-		} else if (buf[0] == '\n') {
-			finished = 1;
-			cur = str + len;
-		} else if (buf[0] == '\b') {
-			if (cur > str) {
-				cur--;
-				len--;
-				char* c;
-				for (c = cur; *c != 0; c++) c[0] = c[1];
-			}
-		} else if (buf[0] == '\t') {
-			// ignore tabs -- todo: tab completion???? haha
-		} else if (buf[0] >= ' ') {
-			if (l < 255) {
-				char* c;
-				for (c = cur + len; c >= cur; c--) c[1] = c[0];
-				cur[0] = buf[0];
-				cur++;
-				len++;
 			}
+			in++;
 		}
 
 		// ASSUMPTION : everything will fit on one line...
@@ -136,7 +143,25 @@ char *freadline(FILE f, readline_history *h) {
 		
 		if (finished) {
 			fprintf(f, "\n");
+
+			if (h->str[h->n-1] != str) h->n--;
+
+			i = h->n - 1;
+			while (h->str[i] != str) {
+				if (i == 0) {
+					fprint(f, "READLINE FAIL");
+					return 0;
+				}
+				i--;
+			}
+			while (i < h->n - 1) {
+				h->str[i] = h->str[i+1];
+				i++;
+			}
+			h->str[i] = str;
+
 			if (h->str[h->n-1][0] == 0) h->n--;
+
 			return str;
 		}
 	}
-- 
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