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annotate gsm-fw/sprintf/old/doprnt.c @ 429:f114f5c547ec

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rvinterf/README: beginning of proper documentation
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 21 Jun 2014 19:36:32 +0000
parents 7e45ada9c365
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
79
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1 /* the guts of printf - this implementation came from 4.3BSD-Tahoe */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
2
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
3 #include <sys/types.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
4 #include <ctype.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
5 #include <stdarg.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
6
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
7 #define PUTC(ch) (*(*outptrp)++ = (ch))
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
8
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
9 #define ARG() \
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
10 _ulong = flags&LONGINT ? va_arg(argp, long) : va_arg(argp, int);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
11
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
12 #define BUF 256
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
13
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
14 #define todigit(c) ((c) - '0')
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
15 #define tochar(n) ((n) + '0')
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
16
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
17 /* have to deal with the negative buffer count kludge */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
18 #define NEGATIVE_COUNT_KLUDGE
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
19
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
20 #define LONGINT 0x01 /* long integer */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
21 #define LONGDBL 0x02 /* long double; unimplemented */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
22 #define SHORTINT 0x04 /* short integer */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
23 #define ALT 0x08 /* alternate form */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
24 #define LADJUST 0x10 /* left adjustment */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
25 #define ZEROPAD 0x20 /* zero (as opposed to blank) pad */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
26 #define HEXPREFIX 0x40 /* add 0x or 0X prefix */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
27
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
28 _doprnt(fmt0, argp, outptrp)
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
29 u_char *fmt0;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
30 va_list argp;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
31 char **outptrp;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
32 {
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
33 register u_char *fmt; /* format string */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
34 register int ch; /* character from fmt */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
35 register int cnt; /* return value accumulator */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
36 register int n; /* random handy integer */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
37 register char *t; /* buffer pointer */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
38 u_long _ulong; /* integer arguments %[diouxX] */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
39 int base; /* base for [diouxX] conversion */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
40 int dprec; /* decimal precision in [diouxX] */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
41 int fieldsz; /* field size expanded by sign, etc */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
42 int flags; /* flags as above */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
43 int prec; /* precision from format (%.3d), or -1 */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
44 int realsz; /* field size expanded by decimal precision */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
45 int size; /* size of converted field or string */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
46 int width; /* width from format (%8d), or 0 */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
47 char sign; /* sign prefix (' ', '+', '-', or \0) */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
48 char softsign; /* temporary negative sign for floats */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
49 char *digs; /* digits for [diouxX] conversion */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
50 char buf[BUF]; /* space for %c, %[diouxX], %[eEfgG] */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
51
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
52 fmt = fmt0;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
53 digs = "0123456789abcdef";
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
54 for (cnt = 0;; ++fmt) {
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
55 for (; (ch = *fmt) && ch != '%'; ++cnt, ++fmt)
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
56 PUTC(ch);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
57 if (!ch)
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
58 return (cnt);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
59
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
60 flags = 0; dprec = 0; width = 0;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
61 prec = -1;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
62 sign = '\0';
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
63
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
64 rflag: switch (*++fmt) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
65 case ' ':
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
66 /*
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
67 * ``If the space and + flags both appear, the space
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
68 * flag will be ignored.''
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
69 * -- ANSI X3J11
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
70 */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
71 if (!sign)
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
72 sign = ' ';
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
73 goto rflag;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
74 case '#':
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
75 flags |= ALT;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
76 goto rflag;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
77 case '*':
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
78 /*
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
79 * ``A negative field width argument is taken as a
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
80 * - flag followed by a positive field width.''
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
81 * -- ANSI X3J11
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
82 * They don't exclude field widths read from args.
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
83 */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
84 if ((width = va_arg(argp, int)) >= 0)
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
85 goto rflag;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
86 width = -width;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
87 /* FALLTHROUGH */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
88 case '-':
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
89 flags |= LADJUST;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
90 goto rflag;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
91 case '+':
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
92 sign = '+';
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
93 goto rflag;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
94 case '.':
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
95 if (*++fmt == '*')
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
96 n = va_arg(argp, int);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
97 else {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
98 n = 0;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
99 while (isascii(*fmt) && isdigit(*fmt))
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
100 n = 10 * n + todigit(*fmt++);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
101 --fmt;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
102 }
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
103 prec = n < 0 ? -1 : n;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
104 goto rflag;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
105 case '0':
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
106 /*
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
107 * ``Note that 0 is taken as a flag, not as the
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
108 * beginning of a field width.''
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
109 * -- ANSI X3J11
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
110 */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
111 flags |= ZEROPAD;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
112 goto rflag;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
113 case '1': case '2': case '3': case '4':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
114 case '5': case '6': case '7': case '8': case '9':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
115 n = 0;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
116 do {
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
117 n = 10 * n + todigit(*fmt);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
118 } while (isascii(*++fmt) && isdigit(*fmt));
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
119 width = n;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
120 --fmt;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
121 goto rflag;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
122 case 'L':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
123 flags |= LONGDBL;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
124 goto rflag;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
125 case 'h':
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
126 flags |= SHORTINT;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
127 goto rflag;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
128 case 'l':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
129 flags |= LONGINT;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
130 goto rflag;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
131 case 'c':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
132 *(t = buf) = va_arg(argp, int);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
133 size = 1;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
134 sign = '\0';
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
135 goto pforw;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
136 case 'D':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
137 flags |= LONGINT;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
138 /*FALLTHROUGH*/
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
139 case 'd':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
140 case 'i':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
141 ARG();
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
142 if ((long)_ulong < 0) {
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
143 _ulong = -_ulong;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
144 sign = '-';
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
145 }
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
146 base = 10;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
147 goto number;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
148 case 'n':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
149 if (flags & LONGINT)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
150 *va_arg(argp, long *) = cnt;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
151 else if (flags & SHORTINT)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
152 *va_arg(argp, short *) = cnt;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
153 else
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
154 *va_arg(argp, int *) = cnt;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
155 break;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
156 case 'O':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
157 flags |= LONGINT;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
158 /*FALLTHROUGH*/
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
159 case 'o':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
160 ARG();
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
161 base = 8;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
162 goto nosign;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
163 case 'p':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
164 /*
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
165 * ``The argument shall be a pointer to void. The
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
166 * value of the pointer is converted to a sequence
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
167 * of printable characters, in an implementation-
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
168 * defined manner.''
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
169 * -- ANSI X3J11
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
170 */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
171 /* NOSTRICT */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
172 _ulong = (u_long)va_arg(argp, void *);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
173 base = 16;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
174 goto nosign;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
175 case 's':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
176 if (!(t = va_arg(argp, char *)))
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
177 t = "(null)";
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
178 if (prec >= 0) {
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
179 /*
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
180 * can't use strlen; can only look for the
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
181 * NUL in the first `prec' characters, and
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
182 * strlen() will go further.
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
183 */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
184 char *p;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
185
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
186 for (p = t, size = 0; size < prec; p++, size++)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
187 if (*p == '\0')
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
188 break;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
189 } else
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
190 size = strlen(t);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
191 sign = '\0';
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
192 goto pforw;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
193 case 'U':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
194 flags |= LONGINT;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
195 /*FALLTHROUGH*/
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
196 case 'u':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
197 ARG();
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
198 base = 10;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
199 goto nosign;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
200 case 'X':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
201 digs = "0123456789ABCDEF";
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
202 /* FALLTHROUGH */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
203 case 'x':
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
204 ARG();
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
205 base = 16;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
206 /* leading 0x/X only if non-zero */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
207 if (flags & ALT && _ulong != 0)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
208 flags |= HEXPREFIX;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
209
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
210 /* unsigned conversions */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
211 nosign: sign = '\0';
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
212 /*
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
213 * ``... diouXx conversions ... if a precision is
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
214 * specified, the 0 flag will be ignored.''
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
215 * -- ANSI X3J11
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
216 */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
217 number: if ((dprec = prec) >= 0)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
218 flags &= ~ZEROPAD;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
219
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
220 /*
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
221 * ``The result of converting a zero value with an
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
222 * explicit precision of zero is no characters.''
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
223 * -- ANSI X3J11
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
224 */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
225 t = buf + BUF;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
226 if (_ulong != 0 || prec != 0) {
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
227 do {
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
228 *--t = digs[_ulong % base];
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
229 _ulong /= base;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
230 } while (_ulong);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
231 digs = "0123456789abcdef";
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
232 if (flags & ALT && base == 8 && *t != '0')
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
233 *--t = '0'; /* octal leading 0 */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
234 }
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
235 size = buf + BUF - t;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
236
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
237 pforw:
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
238 /*
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
239 * All reasonable formats wind up here. At this point,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
240 * `t' points to a string which (if not flags&LADJUST)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
241 * should be padded out to `width' places. If
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
242 * flags&ZEROPAD, it should first be prefixed by any
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
243 * sign or other prefix; otherwise, it should be blank
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
244 * padded before the prefix is emitted. After any
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
245 * left-hand padding and prefixing, emit zeroes
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
246 * required by a decimal [diouxX] precision, then print
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
247 * the string proper, then emit zeroes required by any
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
248 * leftover floating precision; finally, if LADJUST,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
249 * pad with blanks.
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
250 */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
251
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
252 /*
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
253 * compute actual size, so we know how much to pad
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
254 * fieldsz excludes decimal prec; realsz includes it
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
255 */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
256 fieldsz = size;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
257 if (sign)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
258 fieldsz++;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
259 if (flags & HEXPREFIX)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
260 fieldsz += 2;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
261 realsz = dprec > fieldsz ? dprec : fieldsz;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
262
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
263 /* right-adjusting blank padding */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
264 if ((flags & (LADJUST|ZEROPAD)) == 0 && width)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
265 for (n = realsz; n < width; n++)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
266 PUTC(' ');
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
267 /* prefix */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
268 if (sign)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
269 PUTC(sign);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
270 if (flags & HEXPREFIX) {
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
271 PUTC('0');
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
272 PUTC((char)*fmt);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
273 }
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
274 /* right-adjusting zero padding */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
275 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
276 for (n = realsz; n < width; n++)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
277 PUTC('0');
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
278 /* leading zeroes from decimal precision */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
279 for (n = fieldsz; n < dprec; n++)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
280 PUTC('0');
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
281
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
282 for (n = size; --n >= 0; )
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
283 PUTC(*t++);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
284 /* left-adjusting padding (always blank) */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
285 if (flags & LADJUST)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
286 for (n = realsz; n < width; n++)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
287 PUTC(' ');
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
288 /* finally, adjust cnt */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
289 cnt += width > realsz ? width : realsz;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
290 break;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
291 case '\0': /* "%?" prints ?, unless ? is NULL */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
292 return (cnt);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
293 default:
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
294 PUTC((char)*fmt);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
295 cnt++;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
296 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
297 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
298 /* NOTREACHED */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
299 }