X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=visor;a=blobdiff_plain;f=libvisor%2Fsrc%2Fviprintf.c;h=73276cb2441baf75058fadc4c2fe2809ff30b45d;hp=5f2b3128c13445533901cd75f2dfbd230d4fa22c;hb=a3d913263bd55389a60c8db96d1ea1fc11acf178;hpb=4f957b16f77eb7761afd9e0b9064c7f08deb45be

diff --git a/libvisor/src/viprintf.c b/libvisor/src/viprintf.c
index 5f2b312..73276cb 100644
--- a/libvisor/src/viprintf.c
+++ b/libvisor/src/viprintf.c
@@ -1,3 +1,20 @@
+/*
+visor - lightweight system-independent embeddable text editor framework
+Copyright (C)  2019 John Tsiombikas <nuclear@member.fsf.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 #include "vilibc.h"
 
 enum {
@@ -6,6 +23,8 @@ enum {
 
 static int intern_printf(int out, char *buf, unsigned long sz, const char *fmt, va_list ap);
 static void bwrite(int out, char *buf, unsigned long buf_sz, char *str, int sz);
+static void utoa(unsigned int val, char *buf, int base);
+static void itoa(int val, char *buf, int base);
 
 int sprintf(char *buf, const char *fmt, ...)
 {
@@ -239,11 +258,66 @@ static int intern_printf(int out, char *buf, unsigned long sz, const char *fmt,
  */
 static void bwrite(int out, char *buf, unsigned long buf_sz, char *str, int sz)
 {
-	int i;
-
 	if(out == OUT_BUF) {
 		if(buf_sz && buf_sz <= sz) sz = buf_sz;
 		buf[sz] = 0;
 		memcpy(buf, str, sz);
 	}
 }
+
+static void utoa(unsigned int val, char *buf, int base)
+{
+	static char rbuf[16];
+	char *ptr = rbuf;
+
+	if(val == 0) {
+		*ptr++ = '0';
+	}
+
+	while(val) {
+		unsigned int digit = val % base;
+		*ptr++ = digit < 10 ? (digit + '0') : (digit - 10 + 'a');
+		val /= base;
+	}
+
+	ptr--;
+
+	while(ptr >= rbuf) {
+		*buf++ = *ptr--;
+	}
+	*buf = 0;
+}
+
+static void itoa(int val, char *buf, int base)
+{
+	static char rbuf[16];
+	char *ptr = rbuf;
+	int neg = 0;
+
+	if(val < 0) {
+		neg = 1;
+		val = -val;
+	}
+
+	if(val == 0) {
+		*ptr++ = '0';
+	}
+
+	while(val) {
+		int digit = val % base;
+		*ptr++ = digit < 10 ? (digit + '0') : (digit - 10 + 'a');
+		val /= base;
+	}
+
+	if(neg) {
+		*ptr++ = '-';
+	}
+
+	ptr--;
+
+	while(ptr >= rbuf) {
+		*buf++ = *ptr--;
+	}
+	*buf = 0;
+}
+