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[MINOR] implement ulltoh() to write HTML-formatted numbers 

This function sets CSS letter spacing after each 3rd digit. The page must
create a class "rls" (right letter spacing) with style "letter-spacing: 0.3em"
in order to use it.
This commit is contained in:
Willy Tarreau 2009-03-29 13:41:58 +02:00
parent 2ab85e6fee
commit e7239b5152
2 changed files with 51 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
include/common/standard.h
View File

@ -78,8 +78,9 @@ extern int strlcpy2(char *dst, const char *src, int size);
* This function simply returns a locally allocated string containing
* the ascii representation for number 'n' in decimal.
*/
extern char itoa_str[][21];
extern char itoa_str[][171];
extern const char *ultoa_r(unsigned long n, char *buffer, int size);
extern const char *ulltoh_r(unsigned long long n, char *buffer, int size);
static inline const char *ultoa(unsigned long n)
{
return ultoa_r(n, itoa_str[0], sizeof(itoa_str[0]));
@ -99,6 +100,18 @@ static inline const char *ultoa(unsigned long n)
#define U2A8(n) ({ ultoa_r((n), itoa_str[8], sizeof(itoa_str[8])); })
#define U2A9(n) ({ ultoa_r((n), itoa_str[9], sizeof(itoa_str[9])); })
/* The same macros provide HTML encoding of numbers */
#define U2H0(n) ({ ulltoh_r((n), itoa_str[0], sizeof(itoa_str[0])); })
#define U2H1(n) ({ ulltoh_r((n), itoa_str[1], sizeof(itoa_str[1])); })
#define U2H2(n) ({ ulltoh_r((n), itoa_str[2], sizeof(itoa_str[2])); })
#define U2H3(n) ({ ulltoh_r((n), itoa_str[3], sizeof(itoa_str[3])); })
#define U2H4(n) ({ ulltoh_r((n), itoa_str[4], sizeof(itoa_str[4])); })
#define U2H5(n) ({ ulltoh_r((n), itoa_str[5], sizeof(itoa_str[5])); })
#define U2H6(n) ({ ulltoh_r((n), itoa_str[6], sizeof(itoa_str[6])); })
#define U2H7(n) ({ ulltoh_r((n), itoa_str[7], sizeof(itoa_str[7])); })
#define U2H8(n) ({ ulltoh_r((n), itoa_str[8], sizeof(itoa_str[8])); })
#define U2H9(n) ({ ulltoh_r((n), itoa_str[9], sizeof(itoa_str[9])); })
/*
* This function simply returns a locally allocated string containing the ascii
* representation for number 'n' in decimal, unless n is 0 in which case it

38
src/standard.c
View File

@ -26,8 +26,12 @@
/* enough to store 10 integers of :
* 2^64-1 = 18446744073709551615 or
* -2^63 = -9223372036854775808
*
* The HTML version needs room for adding the 25 characters
* '<span class="rls"></span>' around digits at positions 3N+1 in order
* to add spacing at up to 6 positions : 18 446 744 073 709 551 615
*/
char itoa_str[10][21];
char itoa_str[10][171];
/*
* copies at most <size-1> chars from <src> to <dst>. Last char is always
@ -66,6 +70,38 @@ const char *ultoa_r(unsigned long n, char *buffer, int size)
return pos + 1;
}
/*
* This function simply returns a locally allocated string containing
* the ascii representation for number 'n' in decimal, formatted for
* HTML output with tags to create visual grouping by 3 digits. The
* output needs to support at least 171 characters.
*/
const char *ulltoh_r(unsigned long long n, char *buffer, int size)
{
char *start;
int digit = 0;
start = buffer + size;
*--start = '\0';
do {
if (digit == 3 && start >= buffer + 7)
memcpy(start -= 7, "</span>", 7);
if (start >= buffer + 1) {
*--start = '0' + n % 10;
n /= 10;
}
if (digit == 3 && start >= buffer + 18)
memcpy(start -= 18, "<span class=\"rls\">", 18);
if (digit++ == 3)
digit = 1;
} while (n && start > buffer);
return start;
}
/*
* This function simply returns a locally allocated string containing the ascii
* representation for number 'n' in decimal, unless n is 0 in which case it