/* snprintf.c - Formatted, length-limited print to a string */
+#include <afsconfig.h>
#include <afs/param.h>
-#if defined(AFS_OSF20_ENV) && !defined(AFS_DUX50_ENV) || defined(AFS_AIX32_ENV) || (defined(AFS_SUN55_ENV) && !defined(AFS_SUN56_ENV))
+
+RCSID
+ ("$Header$");
+
#include <sys/types.h>
#include <stdarg.h>
#include <stdio.h>
#include <ctype.h>
+#ifndef AFS_NT40_ENV
#include <netinet/in.h>
#include <netdb.h>
-#if defined(AFS_AIX32_ENV) || defined(AFS_SUN55_ENV)
+#else
+#include <winsock2.h>
+#endif
+#if defined(AFS_AIX32_ENV) || defined(AFS_SUN_ENV) || defined(AFS_XBSD_ENV) || defined(AFS_HPUX_ENV)
#include <sys/socket.h>
#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
#define MAXPREC 100
* to receive it. The minimum length is <prec> or ceil(log{base}(val)),
* whichever is larger, plus room for a trailing NUL.
*/
-static void mkint(char *buf, unsigned long val, int base, int uc, int prec)
+static void
+mkint(char *buf, afs_uintmax_t val, int base, int uc, unsigned prec)
{
- int len = 0, dig, i;
-
- while (val) {
- dig = val % base;
- val = (val - dig) / base;
- if (dig < 10) dig = dig + '0';
- else if (uc) dig = dig + 'A' - 10;
- else dig = dig + 'a' - 10;
- buf[len++] = dig;
- }
- while (len < prec) buf[len++] = '0';
- for (i = 0; i < (len + 1) / 2; i++) {
- dig = buf[i];
- buf[i] = buf[len - i - 1];
- buf[len - i - 1] = dig;
- }
- buf[len] = 0;
+ int len = 0, dig, i;
+
+ while (val) {
+ dig = val % base;
+ val = (val - dig) / base;
+ if (dig < 10)
+ dig = dig + '0';
+ else if (uc)
+ dig = dig + 'A' - 10;
+ else
+ dig = dig + 'a' - 10;
+ buf[len++] = dig;
+ }
+ while (len < prec)
+ buf[len++] = '0';
+ for (i = 0; i < (len + 1) / 2; i++) {
+ dig = buf[i];
+ buf[i] = buf[len - i - 1];
+ buf[len - i - 1] = dig;
+ }
+ buf[len] = 0;
}
* both '0' and ' ' are given, the ' ' flag will be ignored.
* + The '#' and '+' flags have no effect.
*/
-static void vsnprintf(char *p, unsigned int avail, char *fmt, va_list ap)
+int
+afs_vsnprintf(char *p, size_t avail, const char *fmt, va_list ap)
{
- unsigned int width, precision, haveprec, len;
- int ljust, plsign, spsign, altform, zfill;
- int hflag, lflag, count, *countp, j;
- char *x, *y, xbuf[MAXPREC + 21], fbuf[20];
- struct hostent *he;
- struct in_addr ia;
- unsigned long UVAL;
- long SVAL, *lcountp;
- double FVAL;
- short *hcountp;
-
- count = 0;
- avail--;
- while (*fmt && avail) {
- if (*fmt != '%') {
- *p++ = *fmt++;
- avail--;
- count++;
- continue;
- }
+ unsigned int width, precision, haveprec, len;
+ int ljust, plsign, spsign, altform, zfill;
+ int hflag, lflag, count, *countp, j;
+ char *x, *y, xbuf[MAXPREC + 21], fbuf[20];
+ struct hostent *he;
+ struct in_addr ia;
+ afs_uintmax_t UVAL;
+ afs_intmax_t SVAL;
+ afs_intmax_t *llcountp;
+ long *lcountp;
+ double FVAL;
+ short *hcountp;
+
+ count = 0;
+ avail--;
+ while (*fmt && avail) {
+ if (*fmt != '%') {
+ *p++ = *fmt++;
+ avail--;
+ count++;
+ continue;
+ }
/** Found a format specifier **/
- ljust = plsign = spsign = altform = zfill = 0;
- width = precision = haveprec = 0;
- hflag = lflag = 0;
- fmt++;
-
- /* parse format flags */
- while (*fmt) {
- switch (*fmt) {
- case '-': ljust = 1; fmt++; continue; /* left justify */
- case '+': plsign = 1; fmt++; continue; /* use + or - */
- case ' ': spsign = 1; fmt++; continue; /* use space or - */
- case '#': altform = 1; fmt++; continue; /* alternate form */
- case '0': zfill = 1; fmt++; continue; /* pad with 0 */
- default: break;
- }
- break;
- }
-
- /* parse minimum width */
- if (*fmt == '*') {
- width = va_arg(ap, int);
- fmt++;
- } else while (isdigit(*fmt)) {
- width = (width * 10) + (*fmt - '0');
- fmt++;
- }
-
- /* parse precision */
- if (*fmt == '.') {
- fmt++;
- haveprec = 1;
- if (*fmt == '*') {
- precision = va_arg(ap, int);
- fmt++;
- } else while (isdigit(*fmt)) {
- precision = (precision * 10) + (*fmt - '0');
- fmt++;
- }
- }
-
- /* parse size flags */
- while (*fmt) {
- switch (*fmt) {
- case 'h': hflag = 1; fmt++; continue; /* short argument */
- case 'l': lflag = 1; fmt++; continue; /* long argument */
- default: break;
- }
- break;
- }
-
- /* parse format specifier */
- if (!*fmt) break;
- switch (*fmt++) {
- case 'e':
- case 'E':
- case 'f':
- case 'g':
- case 'G':
- FVAL = va_arg(ap, double);
- sprintf(fbuf, "%%%s%s.*L%c", plsign ? "+" : (spsign ? " " : ""),
- altform ? "#" : "", fmt[-1]);
- if (!haveprec) precision = 6;
- if (precision > MAXPREC) precision = MAXPREC;
- sprintf(xbuf, fbuf, precision, FVAL);
- x = xbuf;
- len = strlen(x);
- break;
-
- case 'i':
- case 'd': /* signed decimal integer */
- if (lflag) SVAL = va_arg(ap, long);
- else if (hflag) SVAL = va_arg(ap, short);
- else SVAL = va_arg(ap, int);
- UVAL = (SVAL < 0) ? -SVAL : SVAL;
-
- if (SVAL < 0) xbuf[0] = '-';
- else if (plsign) xbuf[0] = '+';
- else if (spsign) xbuf[0] = ' ';
- else xbuf[0] = 0;
-
- if (!haveprec) {
- if (zfill && !ljust) precision = width - !!xbuf[0];
- else precision = 1;
- if (precision < 1 + !!xbuf[0]) precision = 1 + !!xbuf[0];
- }
- if (precision > MAXPREC) precision = MAXPREC;
-
- mkint(xbuf + 1, UVAL, 10, 0, precision);
- x = xbuf + !xbuf[0];
- len = strlen(x);
- break;
-
-
- case 'o': /* unsigned octal integer */
- if (lflag) UVAL = va_arg(ap, unsigned long);
- else if (hflag) UVAL = va_arg(ap, unsigned short);
- else UVAL = va_arg(ap, unsigned int);
-
- xbuf[0] = '0';
-
- if (!haveprec) {
- if (zfill && !ljust) precision = width;
- else precision = 1;
- }
- if (precision > MAXPREC) precision = MAXPREC;
-
- mkint(xbuf + 1, UVAL, 8, 0, precision);
- x = xbuf + (xbuf[1] == '0' || !altform);
- len = strlen(x);
- break;
-
- case 'u': /* unsigned decimal integer */
- if (lflag) UVAL = va_arg(ap, unsigned long);
- else if (hflag) UVAL = va_arg(ap, unsigned short);
- else UVAL = va_arg(ap, unsigned int);
-
- if (!haveprec) {
- if (zfill && !ljust) precision = width;
- else precision = 1;
- }
- if (precision > MAXPREC) precision = MAXPREC;
-
- mkint(xbuf, UVAL, 10, 0, precision);
- x = xbuf;
- len = strlen(x);
- break;
-
- case 'x':
- case 'X': /* unsigned hexadecimal integer */
- if (lflag) UVAL = va_arg(ap, unsigned long);
- else if (hflag) UVAL = va_arg(ap, unsigned short);
- else UVAL = va_arg(ap, unsigned int);
-
- xbuf[0] = '0';
- xbuf[1] = 'x';
-
- if (!haveprec) {
- if (zfill && !ljust) precision = width;
- else precision = 1;
- }
- if (precision > MAXPREC) precision = MAXPREC;
-
- mkint(xbuf + 2, UVAL, 16, 0, precision);
- x = xbuf + ((altform && UVAL) ? 0 : 2);
- len = strlen(x);
- break;
-
- case '%': /* literal % */
- xbuf[0] = '%';
- xbuf[1] = 0;
- x = xbuf;
- len = 1;
- break;
-
- case 'c': /* character */
- xbuf[0] = va_arg(ap, int);
- xbuf[1] = 0;
- x = xbuf;
- len = 1;
- break;
-
- case 's': /* string */
- x = va_arg(ap, char *);
- if (!x) x = "<null>";
- len = strlen(x);
- if (haveprec && precision < len) len = precision;
- break;
-
- case 'I': /* IP address:
- * value is provided as a network-order unsigned long integer
- * precision specifies max hostname length, as for %s
- * if precision is explicitly 0, no hostname lookup is done
- * if 0fill specified, IPaddr fields are 0-filled to 3 digits
- * if spsign specified, IPaddr fields are space-filled to 3 digits
- */
- UVAL = va_arg(ap, unsigned long);
- ia.s_addr = UVAL;
- if (haveprec && !precision) he = 0;
- else he = gethostbyaddr((char *)&ia, 4, AF_INET);
- if (he) {
- x = he->h_name;
- len = strlen(x);
- if (haveprec && precision < len) len = precision;
- if (altform)
- for (y = x; *y; y++) if (isupper(*y)) *y = tolower(*y);
- else if (plsign)
- for (y = x; *y; y++) if (islower(*y)) *y = toupper(*y);
- } else {
- UVAL = ntohl(UVAL);
- if (zfill) x = "%03u.%03u.%03u.%03u";
- else if (spsign) x = "%3u.%3u.%3u.%3u";
- else x = "%u.%u.%u.%u";
- sprintf(xbuf, x,
- (UVAL & 0xff000000) >> 24, (UVAL & 0x00ff0000) >> 16,
- (UVAL & 0x0000ff00) >> 8, (UVAL & 0x000000ff));
- x = xbuf;
- len = strlen(xbuf);
- }
- break;
-
- case 'n': /* report count so far */
- if (lflag) {
- lcountp = va_arg(ap, long *);
- *lcountp = count;
- } else if (hflag) {
- hcountp = va_arg(ap, short *);
- *hcountp = count;
- } else {
- countp = va_arg(ap, int *);
- *countp = count;
- }
- continue;
-
- default: /* unknown specifier */
- continue;
+ ljust = plsign = spsign = altform = zfill = 0;
+ width = precision = haveprec = 0;
+ hflag = lflag = 0;
+ fmt++;
+
+ /* parse format flags */
+ while (*fmt) {
+ switch (*fmt) {
+ case '-':
+ ljust = 1;
+ fmt++;
+ continue; /* left justify */
+ case '+':
+ plsign = 1;
+ fmt++;
+ continue; /* use + or - */
+ case ' ':
+ spsign = 1;
+ fmt++;
+ continue; /* use space or - */
+ case '#':
+ altform = 1;
+ fmt++;
+ continue; /* alternate form */
+ case '0':
+ zfill = 1;
+ fmt++;
+ continue; /* pad with 0 */
+ default:
+ break;
+ }
+ break;
+ }
+
+ /* parse minimum width */
+ if (*fmt == '*') {
+ width = va_arg(ap, int);
+ fmt++;
+ } else
+ while (isdigit(*fmt)) {
+ width = (width * 10) + (*fmt - '0');
+ fmt++;
+ }
+
+ /* parse precision */
+ if (*fmt == '.') {
+ fmt++;
+ haveprec = 1;
+ if (*fmt == '*') {
+ precision = va_arg(ap, int);
+ fmt++;
+ } else
+ while (isdigit(*fmt)) {
+ precision = (precision * 10) + (*fmt - '0');
+ fmt++;
+ }
+ }
+
+ /* parse size flags */
+ while (*fmt) {
+ switch (*fmt) {
+ case 'h':
+ hflag = 1;
+ fmt++;
+ continue; /* short argument */
+ case 'l':
+ lflag += 1;
+ fmt++;
+ continue; /* long argument */
+ case 'L':
+ lflag = 2;
+ fmt++;
+ continue; /* long long argument */
+ default:
+ break;
+ }
+ break;
+ }
+
+ /* parse format specifier */
+ if (!*fmt)
+ break;
+ switch (*fmt++) {
+ case 'e':
+ case 'E':
+ case 'f':
+ case 'g':
+ case 'G':
+ FVAL = va_arg(ap, double);
+ sprintf(fbuf, "%%%s%s.*L%c", plsign ? "+" : (spsign ? " " : ""),
+ altform ? "#" : "", fmt[-1]);
+ if (!haveprec)
+ precision = 6;
+ if (precision > MAXPREC)
+ precision = MAXPREC;
+ sprintf(xbuf, fbuf, precision, FVAL);
+ x = xbuf;
+ len = strlen(x);
+ break;
+
+ case 'i':
+ case 'd': /* signed decimal integer */
+ if (lflag > 1)
+ SVAL = va_arg(ap, afs_intmax_t);
+ else if (lflag)
+ SVAL = va_arg(ap, long);
+ else if (hflag)
+ SVAL = va_arg(ap, int);
+ else
+ SVAL = va_arg(ap, int);
+ UVAL = (SVAL < 0) ? -SVAL : SVAL;
+
+ if (SVAL < 0)
+ xbuf[0] = '-';
+ else if (plsign)
+ xbuf[0] = '+';
+ else if (spsign)
+ xbuf[0] = ' ';
+ else
+ xbuf[0] = 0;
+
+ if (!haveprec) {
+ if (zfill && !ljust)
+ precision = width - !!xbuf[0];
+ else
+ precision = 1;
+ if (precision < 1 + !!xbuf[0])
+ precision = 1 + !!xbuf[0];
+ }
+ if (precision > MAXPREC)
+ precision = MAXPREC;
+
+ mkint(xbuf + 1, UVAL, 10, 0, precision);
+ x = xbuf + !xbuf[0];
+ len = strlen(x);
+ break;
+
+
+ case 'o': /* unsigned octal integer */
+ if (lflag > 1)
+ UVAL = va_arg(ap, afs_uintmax_t);
+ else if (lflag)
+ UVAL = va_arg(ap, unsigned long);
+ else if (hflag)
+ UVAL = va_arg(ap, unsigned int);
+ else
+ UVAL = va_arg(ap, unsigned int);
+
+ xbuf[0] = '0';
+
+ if (!haveprec) {
+ if (zfill && !ljust)
+ precision = width;
+ else
+ precision = 1;
+ }
+ if (precision > MAXPREC)
+ precision = MAXPREC;
+
+ mkint(xbuf + 1, UVAL, 8, 0, precision);
+ x = xbuf + (xbuf[1] == '0' || !altform);
+ len = strlen(x);
+ break;
+
+ case 'u': /* unsigned decimal integer */
+ if (lflag > 1)
+ UVAL = va_arg(ap, afs_uintmax_t);
+ else if (lflag)
+ UVAL = va_arg(ap, unsigned long);
+ else if (hflag)
+ UVAL = va_arg(ap, unsigned int);
+ else
+ UVAL = va_arg(ap, unsigned int);
+
+ if (!haveprec) {
+ if (zfill && !ljust)
+ precision = width;
+ else
+ precision = 1;
+ }
+ if (precision > MAXPREC)
+ precision = MAXPREC;
+
+ mkint(xbuf, UVAL, 10, 0, precision);
+ x = xbuf;
+ len = strlen(x);
+ break;
+
+ case 'x':
+ case 'X': /* unsigned hexadecimal integer */
+ if (lflag > 1)
+ UVAL = va_arg(ap, afs_uintmax_t);
+ else if (lflag)
+ UVAL = va_arg(ap, unsigned long);
+ else if (hflag)
+ UVAL = va_arg(ap, unsigned int);
+ else
+ UVAL = va_arg(ap, unsigned int);
+
+ xbuf[0] = '0';
+ xbuf[1] = 'x';
+
+ if (!haveprec) {
+ if (zfill && !ljust)
+ precision = width;
+ else
+ precision = 1;
+ }
+ if (precision > MAXPREC)
+ precision = MAXPREC;
+
+ mkint(xbuf + 2, UVAL, 16, 0, precision);
+ x = xbuf + ((altform && UVAL) ? 0 : 2);
+ len = strlen(x);
+ break;
+
+ case '%': /* literal % */
+ xbuf[0] = '%';
+ xbuf[1] = 0;
+ x = xbuf;
+ len = 1;
+ break;
+
+ case 'c': /* character */
+ xbuf[0] = va_arg(ap, int);
+ xbuf[1] = 0;
+ x = xbuf;
+ len = 1;
+ break;
+
+ case 's': /* string */
+ x = va_arg(ap, char *);
+ if (!x)
+ x = "<null>";
+ len = strlen(x);
+ if (haveprec && precision < len)
+ len = precision;
+ break;
+
+ case 'I': /* IP address:
+ * value is provided as a network-order unsigned long integer
+ * precision specifies max hostname length, as for %s
+ * if precision is explicitly 0, no hostname lookup is done
+ * if 0fill specified, IPaddr fields are 0-filled to 3 digits
+ * if spsign specified, IPaddr fields are space-filled to 3 digits
+ */
+ UVAL = va_arg(ap, unsigned long);
+ ia.s_addr = UVAL;
+ if (haveprec && !precision)
+ he = 0;
+ else
+ he = gethostbyaddr((char *)&ia, 4, AF_INET);
+ if (he) {
+ x = he->h_name;
+ len = strlen(x);
+ if (haveprec && precision < len)
+ len = precision;
+ if (altform) {
+ for (y = x; *y; y++)
+ if (isupper(*y))
+ *y = tolower(*y);
+ } else if (plsign) {
+ for (y = x; *y; y++)
+ if (islower(*y))
+ *y = toupper(*y);
+ }
+ } else {
+ UVAL = ntohl(UVAL);
+ if (zfill) {
+ x = "%03u.%03u.%03u.%03u";
+ } else if (spsign) {
+ x = "%3u.%3u.%3u.%3u";
+ } else {
+ x = "%u.%u.%u.%u";
+ }
+ sprintf(xbuf, x, (UVAL & 0xff000000) >> 24,
+ (UVAL & 0x00ff0000) >> 16, (UVAL & 0x0000ff00) >> 8,
+ (UVAL & 0x000000ff));
+ x = xbuf;
+ len = strlen(xbuf);
+ }
+ break;
+
+ case 'n': /* report count so far */
+ if (lflag > 1) {
+ llcountp = va_arg(ap, afs_intmax_t *);
+ *llcountp = (afs_intmax_t)count;
+ } else if (lflag) {
+ lcountp = va_arg(ap, long *);
+ *lcountp = (long)count;
+ } else if (hflag) {
+ hcountp = va_arg(ap, short *);
+ *hcountp = (short)count;
+ } else {
+ countp = va_arg(ap, int *);
+ *countp = count;
+ }
+ continue;
+
+ default: /* unknown specifier */
+ continue;
+ }
+
+ /* render the results */
+ if (len > avail)
+ len = avail;
+ if (!width)
+ width = len;
+ if (width > avail)
+ width = avail;
+ j = width - len;
+ if (j > 0) {
+ avail -= j;
+ count += j;
+ }
+
+ if (!ljust)
+ while (j-- > 0)
+ *p++ = ' ';
+
+ strncpy(p, x, len);
+ avail -= len;
+ count += len;
+ p += len;
+
+ if (ljust)
+ while (j-- > 0)
+ *p++ = ' ';
}
+ *p = 0;
+ return count;
+}
- /* render the results */
- if (len > avail) len = avail;
- if (!width) width = len;
- if (width > avail) width = avail;
- j = width - len;
- if (j > 0) {
- avail -= j;
- count += j;
- }
+int
+afs_snprintf(char *p, size_t avail, const char *fmt, ...)
+{
+ va_list ap;
+ int result;
- if (!ljust) while (j-- > 0) *p++ = ' ';
+ va_start(ap, fmt);
+ result = afs_vsnprintf(p, avail, fmt, ap);
+ va_end(ap);
+ return result;
+}
- strncpy(p, x, len);
- avail -= len;
- count += len;
- p += len;
+#if defined(AFS_OSF20_ENV) && !defined(AFS_DUX50_ENV) || defined(AFS_AIX32_ENV) || (defined(AFS_SUN55_ENV) && !defined(AFS_SUN56_ENV)) || !defined(HAVE_VSNPRINTF)
- if (ljust) while (j-- > 0) *p++ = ' ';
- }
- *p = 0;
+#ifdef AFS_AIX51_ENV
+int
+vsnprintf(char *p, size_t avail, const char *fmt, va_list ap)
+#else
+void
+vsnprintf(char *p, unsigned int avail, char *fmt, va_list ap)
+#endif
+{
+ int result;
+ result = afs_vsnprintf(p, avail, fmt, ap);
+#ifdef AFS_AIX51_ENV
+ return result;
+#endif
}
+#endif /* AFS_OSF20_ENV || AFS_AIX32_ENV */
+#ifndef AFS_NT40_ENV
+#if defined(AFS_OSF20_ENV) && !defined(AFS_DUX50_ENV) || defined(AFS_AIX32_ENV) || (defined(AFS_SUN55_ENV) && !defined(AFS_SUN56_ENV)) || !defined(HAVE_SNPRINTF)
-void snprintf(char *p, unsigned int avail, char *fmt, ...)
+#ifdef AFS_AIX51_ENV
+int
+snprintf(char *p, size_t avail, const char *fmt, ...)
+#else
+void
+snprintf(char *p, unsigned int avail, char *fmt, ...)
+#endif
{
- va_list ap;
-
- va_start(ap, fmt);
- vsnprintf(p, avail, fmt, ap);
- va_end(ap);
+ va_list ap;
+ int result;
+
+ va_start(ap, fmt);
+ result = afs_vsnprintf(p, avail, fmt, ap);
+ va_end(ap);
+#ifdef AFS_AIX51_ENV
+ return result;
+#endif
}
#endif /* AFS_OSF20_ENV || AFS_AIX32_ENV */
+#endif /* AFS_NT40_ENV */
git://git.openafs.org / openafs.git / blobdiff