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wordwrap function from Chris Russel <russel@yorku.ca>

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differences from his patch:
 - wordwrap width and wrap-string now optional parameters
   (default to 75 and "\n" respectively)
 - wordwrap_byte is now just an automatic special case of wordwrap
 - Zend API compliant

@- Added new function "wordwrap" to wordwrap long strings from Chris
@  Russel <russel@yorku.ca> (David Croft)
This commit is contained in:
David Croft 2000-07-22 01:12:24 +00:00
parent e007639f2a
commit 8dd1fdb1a0
3 changed files with 140 additions and 0 deletions
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1
ext/standard/basic_functions.c
View File

@ -106,6 +106,7 @@ function_entry basic_functions[] = {
PHP_FE(getimagesize, NULL)
PHP_FE(wordwrap, NULL)
PHP_FE(htmlspecialchars, NULL)
PHP_FE(htmlentities, NULL)
PHP_FE(get_html_translation_table, NULL)

1
ext/standard/php_string.h
View File

@ -46,6 +46,7 @@ PHP_FUNCTION(soundex);
PHP_FUNCTION(levenshtein);
PHP_FUNCTION(count_chars);
PHP_FUNCTION(wordwrap);
PHP_FUNCTION(explode);
PHP_FUNCTION(implode);
PHP_FUNCTION(strtok);

138
ext/standard/string.c
View File

@ -226,6 +226,144 @@ PHP_FUNCTION(ltrim)
}
/* }}} */
/* {{{ proto string wordwrap(string str[, int width[, string break]])
* wrap buffer to selected number of characters using string break char */
PHP_FUNCTION(wordwrap)
{
pval **ptext, **plinelength, **pbreakchar;
long i=0, l=0, pgr=0, linelength=0, last=0, breakcharlen;
char *text, *breakchar, *newtext;
if (ZEND_NUM_ARGS() < 1 || ZEND_NUM_ARGS() > 3 || zend_get_parameters_ex(ZEND_NUM_ARGS(), &ptext, &plinelength, &pbreakchar) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(ptext);
text = (*ptext)->value.str.val;
if (ZEND_NUM_ARGS() > 1) {
convert_to_long_ex(plinelength);
linelength = (*plinelength)->value.lval;
}
else {
linelength = 75;
}
if (ZEND_NUM_ARGS() > 2) {
convert_to_string_ex(pbreakchar);
breakchar = (*pbreakchar)->value.str.val;
breakcharlen = (*pbreakchar)->value.str.len;
}
else {
breakchar = "\n";
breakcharlen = 1;
}
/* Special case for a single-character break as it needs no
additional storage space */
if (breakcharlen == 1) {
while (text[i] != '\0') {
/* prescan line to see if it is greater than linelength */
l = 0;
while (text[i+l] != breakchar[0]) {
if (text[i+l] == '\0') {
l --;
break;
}
l++;
}
if (l > linelength) {
pgr = l;
l = linelength;
/* needs breaking; work backwards to find previous word */
while (l >= 0) {
if (text[i+l] == ' ') {
text[i+l] = breakchar[0];
break;
}
l --;
}
if (l == -1) {
/* couldn't break is backwards, try looking forwards */
l = linelength;
while (l <= pgr) {
if(text[i+l] == ' ') {
text[i+l] = breakchar[0];
break;
}
l ++;
}
}
}
i += l+1;
}
RETVAL_STRINGL(text, strlen(text), 1);
}
else {
/* Multiple character line break */
newtext = emalloc((*ptext)->value.str.len * (breakcharlen+1));
newtext[0] = '\0';
i = 0;
while (text[i] != '\0') {
/* prescan line to see if it is greater than linelength */
l = 0;
while (text[i+l] != '\0') {
if (text[i+l] == breakchar[0]) {
if (breakcharlen == 1 || strncmp(text+i+l, breakchar, breakcharlen)==0)
break;
}
l ++;
}
if (l > linelength) {
pgr = l;
l = linelength;
/* needs breaking; work backwards to find previous word */
while (l >= 0) {
if (text[i+l] == ' ') {
strncat(newtext, text+last, i+l-last);
strcat(newtext, breakchar);
last = i + l + 1;
break;
}
l --;
}
if (l == -1) {
/* couldn't break it backwards, try looking forwards */
l = linelength;
while (l <= pgr) {
if (text[i+l] == ' ') {
strncat(newtext, text+last, i+l-last);
strcat(newtext, breakchar);
last = i + l + 1;
break;
}
l ++;
}
}
i += l+1;
}
else {
i += (l ? l : 1);
}
}
if (i+l > last) {
strcat(newtext, text+last);
}
RETVAL_STRINGL(newtext, strlen(newtext), 1);
efree(newtext);
}
}
/* }}} */
PHPAPI void php_explode(zval *delim, zval *str, zval *return_value, int limit)
{
char *p1, *p2, *endp;