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comparison buf.c @ 141:5ed54050ae31

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Added buf_cut, cut the buffer
author David Demelier <markand@malikania.fr>
date Wed, 02 May 2012 20:20:22 +0200
parents cf738da3ad60
children 8c7812fefe0f
comparison
equal deleted inserted replaced
140:09fb5267c906 141:5ed54050ae31
128 */ 128 */
129 129
130 int 130 int
131 buf_putc(struct buf *buf, int c) 131 buf_putc(struct buf *buf, int c)
132 { 132 {
133 return buf_printf(buf, "%c", c); 133 char str[2] = { c, '\0' };
134
135 return buf_ncat(buf, str, 1);
134 } 136 }
135 137
136 /* 138 /*
137 * Concatenate the printf(3) like call to the string buffer, this function 139 * Concatenate the printf(3) like call to the string buffer, this function
138 * returns -1 on fixed safe buffer, otherwise 0 is returned if there 140 * returns -1 on fixed safe buffer, otherwise 0 is returned if there
202 204
203 return 0; 205 return 0;
204 } 206 }
205 207
206 /* 208 /*
209 * Remove `n' characters from the buffer, a positive value will cut the string
210 * from beginning, negative value will cut from end.
211 */
212
213 void
214 buf_cut(struct buf *buf, int n)
215 {
216 int pos;
217
218 if (n < 0 || (unsigned int)n >= buf->length)
219 return;
220
221 if (n < 0 && buf->length - (-n) > 0)
222 pos = buf->length - (-n);
223 else if ((unsigned int)n < buf->length)
224 pos = n;
225
226 buf->text[pos] = '\0';
227 buf->length -= buf->length - pos;
228 }
229
230 /*
207 * Clear the string buffer. 231 * Clear the string buffer.
208 */ 232 */
209 233
210 void 234 void
211 buf_clear(struct buf *buf) 235 buf_clear(struct buf *buf)