apr_status_t filepath_root_case(char **rootpath, char *root, apr_pool_t *p)
{
if (root[0] && apr_islower(root[0]) && root[1] == ':') {
*rootpath = apr_pstrdup(p, root);
(*rootpath)[0] = apr_toupper((*rootpath)[0]);
}
else {
*rootpath = root;
}
return APR_SUCCESS;
}
/*
* Do format conversion placing the output in buffer
* 本函数没有调用任何外部函数，所以它是自包含的
*/
APR_DECLARE(int) apr_vformatter(int (*flush_func)(apr_vformatter_buff_t *),
apr_vformatter_buff_t *vbuff, const char *fmt, va_list ap)
{
register char *sp;
register char *bep;
register int cc = 0;
register apr_size_t i;
register char *s = NULL;
char *q;
apr_size_t s_len = 0;
register apr_size_t min_width = 0;
apr_size_t precision = 0;
enum {
LEFT, RIGHT
} adjust;
char pad_char;
char prefix_char;
double fp_num;
apr_int64_t i_quad = 0;
apr_uint64_t ui_quad;
apr_int32_t i_num = 0;
apr_uint32_t ui_num = 0;
char num_buf[NUM_BUF_SIZE];
char char_buf[2]; /* for printing %% and %<unknown> */
enum var_type_enum {
IS_QUAD, IS_LONG, IS_SHORT, IS_INT
};
enum var_type_enum var_type = IS_INT;
/*
* Flag variables
*/
boolean_e alternate_form;
boolean_e print_sign;
boolean_e print_blank;
boolean_e adjust_precision;
boolean_e adjust_width;
int is_negative;
sp = vbuff->curpos;
bep = vbuff->endpos;
while (*fmt) {
if (*fmt != '%') {
INS_CHAR(*fmt, sp, bep, cc);
}
else {
/*
* Default variable settings
*/
boolean_e print_something = YES;
adjust = RIGHT;
alternate_form = print_sign = print_blank = NO;
pad_char = ' ';
prefix_char = NUL;
fmt++;
/*
* Try to avoid checking for flags, width or precision
*/
if (!apr_islower(*fmt)) {
/*
* Recognize flags: -, #, BLANK, +
*/
for (;; fmt++) {
if (*fmt == '-')
adjust = LEFT;
else if (*fmt == '+')
print_sign = YES;
else if (*fmt == '#')
alternate_form = YES;
else if (*fmt == ' ')
print_blank = YES;
else if (*fmt == '0')
pad_char = '0';
else
break;
}
/*
* Check if a width was specified
*/
if (apr_isdigit(*fmt)) {
STR_TO_DEC(fmt, min_width);
adjust_width = YES;
}
else if (*fmt == '*') {
int v = va_arg(ap, int);
fmt++;
adjust_width = YES;
if (v < 0) {
adjust = LEFT;
min_width = (apr_size_t)(-v);
}
else
min_width = (apr_size_t)v;
}
else
adjust_width = NO;
/*
* Check if a precision was specified
*/
if (*fmt == '.') {
adjust_precision = YES;
fmt++;
if (apr_isdigit(*fmt)) {
STR_TO_DEC(fmt, precision);
}
else if (*fmt == '*') {
int v = va_arg(ap, int);
fmt++;
precision = (v < 0) ? 0 : (apr_size_t)v;
}
else
