#ifndef TEXTBUF_H
 #define TEXTBUF_H
 struct text_buffer {
 	char *data;
 	size_t pos;
 	size_t capacity;
 };
 
 static inline int textbuffer_ensure_capacity(struct text_buffer *txtbuf, size_t len)
 {
 	if (txtbuf->pos + len > txtbuf->capacity) {
 		char *d;

 		unsigned capacity = MAX(txtbuf->pos + len, txtbuf->capacity + 4096);
 		d = cli_realloc(txtbuf->data, capacity);

 		if(!d)
 			return -1;

 		txtbuf->capacity = capacity;

 		txtbuf->data = d;
 	}
 	return 0;
 }
 

 static inline int textbuffer_append_len(struct text_buffer *txtbuf, const char *s, size_t len)

 {

 	if(textbuffer_ensure_capacity(txtbuf, len) == -1)
 		return -1;

 	memcpy(&txtbuf->data[txtbuf->pos], s, len);
 	txtbuf->pos += len;

 	return 0;

 }
 
 

 static inline int textbuffer_append(struct text_buffer *txtbuf, const char *s)

 {
 	size_t len = strlen(s);

 	return textbuffer_append_len(txtbuf, s, len);

 }
 

 static inline int textbuffer_putc(struct text_buffer *txtbuf, const char c)

 {

 	if(textbuffer_ensure_capacity(txtbuf, 1) == -1)
 		return -1;

 	txtbuf->data[txtbuf->pos++] = c;

 	return 0;

 }
 #endif