2 libcore: library for basic data structures and algorithms.
3 Copyright (C) 2005 IPD Goos, Universit"at Karlsruhe, Germany
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "lc_common_t.h"
25 #include "lc_defines.h"
26 #include "lc_printf.h"
28 /* Default appendable implementations */
30 int lc_appendable_snwadd(lc_appendable_t *app, const char *str, size_t len,
31 unsigned int width, int left_just, char pad)
35 int to_pad = width - len;
37 /* If not left justified, pad left */
38 for(i = 0; !left_just && i < to_pad; ++i)
39 res += lc_appendable_chadd(app, pad);
41 /* Send the visible portion of the string to the output. */
42 res += lc_appendable_snadd(app, str, len);
44 /* If left justified, pad right. */
45 for(i = 0; left_just && i < to_pad; ++i)
46 res += lc_appendable_chadd(app, pad);
52 void lc_appendable_init(lc_appendable_t *env, const lc_appendable_funcs_t *app,
53 void *obj, size_t limit)
63 static void default_init(UNUSED(lc_appendable_t *env))
67 static void default_finish(UNUSED(lc_appendable_t *env))
75 static int file_snadd(lc_appendable_t *obj, const char *str, size_t n)
78 fwrite(str, sizeof(char), n, obj->obj);
82 static int file_chadd(lc_appendable_t *obj, int ch)
89 static lc_appendable_funcs_t app_file = {
96 const lc_appendable_funcs_t *lc_appendable_file = &app_file;
103 static void str_init(lc_appendable_t *obj)
105 strncpy(obj->obj, "", obj->limit);
108 static int str_snadd(lc_appendable_t *obj, const char *str, size_t n)
110 size_t to_write = LC_MIN(obj->limit - obj->written - 1, n);
111 char *tgt = obj->obj;
112 strncpy(tgt + obj->written, str, to_write);
113 obj->written += to_write;
117 static int str_chadd(lc_appendable_t *obj, int ch)
119 if(obj->limit - obj->written > 1) {
120 char *tgt = obj->obj;
121 tgt[obj->written++] = (char) ch;
128 static void str_finish(lc_appendable_t *obj)
130 char *str = obj->obj;
131 str[obj->written] = '\0';
134 static lc_appendable_funcs_t app_string = {
141 const lc_appendable_funcs_t *lc_appendable_string = &app_string;
147 static int obst_snadd(lc_appendable_t *obj, const char *str, size_t n)
149 struct obstack *obst = obj->obj;
151 obstack_grow(obst, str, n);
155 static int obst_chadd(lc_appendable_t *obj, int ch)
157 struct obstack *obst = obj->obj;
158 obstack_1grow(obst, (char) ch);
163 static lc_appendable_funcs_t app_obstack = {
170 const lc_appendable_funcs_t *lc_appendable_obstack = &app_obstack;