mirror of https://github.com/nealey/eris.git
77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
#ifndef FMT_H
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#define FMT_H
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#include "str.h"
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#define FMT_ULONG 40 /* enough space to hold 2^128 - 1 in decimal, plus \0 */
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#define FMT_8LONG 44 /* enough space to hold 2^128 - 1 in octal, plus \0 */
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#define FMT_XLONG 33 /* enough space to hold 2^128 - 1 in hexadecimal, plus \0 */
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#define FMT_LEN ((char *) 0) /* convenient abbreviation */
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/* The formatting routines do not append \0!
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* Use them like this: buf[fmt_ulong(buf,number)]=0; */
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/* convert signed src integer -23 to ASCII '-','2','3', return length.
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* If dest is not NULL, write result to dest */
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unsigned int fmt_long(char *dest,signed long src);
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/* convert unsigned src integer 23 to ASCII '2','3', return length.
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* If dest is not NULL, write result to dest */
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unsigned int fmt_ulong(char *dest,unsigned long src);
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/* same for long long */
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unsigned int fmt_ulonglong(char *dest,unsigned long long src);
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/* convert unsigned src integer 0x23 to ASCII '2','3', return length.
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* If dest is not NULL, write result to dest */
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unsigned int fmt_xlong(char *dest,unsigned long src);
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/* convert unsigned src integer 023 to ASCII '2','3', return length.
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* If dest is not NULL, write result to dest */
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unsigned int fmt_8long(char *dest,unsigned long src);
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#define fmt_uint(dest,src) fmt_ulong(dest,src)
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#define fmt_int(dest,src) fmt_long(dest,src)
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#define fmt_xint(dest,src) fmt_xlong(dest,src)
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#define fmt_8int(dest,src) fmt_8long(dest,src)
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/* Like fmt_ulong, but prepend '0' while length is smaller than padto.
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* Does not truncate! */
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unsigned int fmt_ulong0(char *,unsigned long src,unsigned int padto);
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#define fmt_uint0(buf,src,padto) fmt_ulong0(buf,src,padto)
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/* convert src double 1.7 to ASCII '1','.','7', return length.
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* If dest is not NULL, write result to dest */
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unsigned int fmt_double(char *dest, double d,int max,int prec);
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/* if src is negative, write '-' and return 1.
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* if src is positive, write '+' and return 1.
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* otherwise return 0 */
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unsigned int fmt_plusminus(char *dest,int src);
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/* if src is negative, write '-' and return 1.
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* otherwise return 0. */
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unsigned int fmt_minus(char *dest,int src);
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/* copy str to dest until \0 byte, return number of copied bytes. */
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unsigned int fmt_str(char *dest,const char *src);
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/* copy str to dest until \0 byte or limit bytes copied.
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* return number of copied bytes. */
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unsigned int fmt_strn(char *dest,const char *src,unsigned int limit);
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/* "foo" -> " foo"
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* write padlen-srclen spaces, if that is >= 0. Then copy srclen
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* characters from src. Truncate only if total length is larger than
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* maxlen. Return number of characters written. */
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unsigned int fmt_pad(char* dest,const char* src,unsigned int srclen,unsigned int padlen,unsigned int maxlen);
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/* "foo" -> "foo "
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* append padlen-srclen spaces after dest, if that is >= 0. Truncate
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* only if total length is larger than maxlen. Return number of
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* characters written. */
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unsigned int fmt_fill(char* dest,unsigned int srclen,unsigned int padlen,unsigned int maxlen);
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#endif
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