int center(buffer * const b) {
line_desc * const ld = b->cur_line_desc;
const int right_margin = b->opt.right_margin ? b->opt.right_margin : ne_columns;
int64_t
len,
start_pos = 0,
end_pos = ld->line_len;
while(start_pos < ld->line_len && isasciispace(ld->line[start_pos])) start_pos = next_pos(ld->line, start_pos, b->encoding);
if (start_pos == ld->line_len) return OK;
while(isasciispace(ld->line[prev_pos(ld->line, end_pos, b->encoding)])) end_pos = prev_pos(ld->line, end_pos, b->encoding);
len = b->encoding == ENC_UTF8 ? utf8strlen(&ld->line[start_pos], end_pos - start_pos) : end_pos - start_pos;
if (len >= right_margin) return OK;
b->cur_pos = -1;
start_undo_chain(b);
delete_stream(b, ld, b->cur_line, end_pos, ld->line_len - end_pos);
delete_stream(b, ld, b->cur_line, 0, start_pos);
insert_spaces(b, ld, b->cur_line, 0, (right_margin - len) / 2);
end_undo_chain(b);
return OK;
}
void add_string_pair(char *in, char *out) {
int *int_in, *int_out;
int i, j;
char *token;
struct stringpair *newpair;
/* Get int array */
int_in = malloc(sizeof(int) * (utf8strlen(in) + 1));
int_out = malloc(sizeof(int) * (utf8strlen(out) + 1));
if (g_input_format == INPUT_FORMAT_L2P) {
for (i = 0, j = 0; in[i] != '\0'; i += utf8len(&in[i]), j++) {
int_in[j] = get_set_char_num(strndup(&in[i], utf8len(&in[i])));
}
int_in[j] = -1;
for (i = 0, j = 0; out[i] != '\0'; i += utf8len(&out[i]), j++) {
int_out[j] = get_set_char_num(strndup(&out[i], utf8len(&out[i])));
}
int_out[j] = -1;
} else if (g_input_format == INPUT_FORMAT_NEWS) {
token = strtok(in, " ");
for (j = 0; token != NULL; j++) {
int_in[j] = get_set_char_num(token);
token = strtok(NULL, " ");
}
int_in[j] = -1;
token = strtok(out, " ");
for (j = 0; token != NULL; j++) {
int_out[j] = get_set_char_num(token);
token = strtok(NULL, " ");
}
int_out[j] = -1;
}
newpair = malloc(sizeof(struct stringpair));
newpair->in = int_in;
newpair->out = int_out;
newpair->next = NULL;
if (g_stringpairs == NULL) {
g_stringpairs = newpair;
g_stringpairs_tail = newpair;
} else {
g_stringpairs_tail->next = newpair;
g_stringpairs_tail = newpair;
}
}
void print_pair_aligned(int *in, int *out) {
int i, fieldwidth;
char *instr, *outstr;
g_symboltable[0] = "_";
for (i = 0; in[i] != -1 && out[i] != -1; i++) {
instr = g_symboltable[ in[i] ];
outstr = g_symboltable[ out[i] ];
fieldwidth = utf8strlen(instr) > utf8strlen(outstr) ? utf8strlen(instr) : utf8strlen(outstr);
printf("%-*s", fieldwidth, instr);
if (in[i+1] != -1 && out[i+1] != -1)
printf("|");
}
printf("\n");
for (i = 0; in[i] != -1 && out[i] != -1; i++) {
instr = g_symboltable[ in[i] ];
outstr = g_symboltable[ out[i] ];
fieldwidth = utf8strlen(instr) > utf8strlen(outstr) ? utf8strlen(instr) : utf8strlen(outstr);
printf("%-*s", fieldwidth, outstr);
if (in[i+1] != -1 && out[i+1] != -1)
printf("|");
}
printf("\n\n");
}