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1.7 ! kristaps 1: /* $Id: out.c,v 1.6 2009/10/22 18:55:32 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17: #include <sys/types.h>
18:
1.6 kristaps 19: #include <assert.h>
1.1 kristaps 20: #include <ctype.h>
1.3 kristaps 21: #include <stdio.h>
1.1 kristaps 22: #include <stdlib.h>
1.6 kristaps 23: #include <string.h>
1.7 ! kristaps 24: #include <time.h>
1.1 kristaps 25:
26: #include "out.h"
27:
1.7 ! kristaps 28: #ifdef __linux__
! 29: extern size_t strlcat(char *, const char *, size_t);
! 30: #endif
1.3 kristaps 31:
32: /*
33: * Convert a `scaling unit' to a consistent form, or fail. Scaling
1.5 kristaps 34: * units are documented in groff.7, mdoc.7, man.7.
1.3 kristaps 35: */
1.1 kristaps 36: int
1.5 kristaps 37: a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
1.1 kristaps 38: {
1.4 kristaps 39: char buf[BUFSIZ], hasd;
1.1 kristaps 40: int i;
1.3 kristaps 41: enum roffscale unit;
1.1 kristaps 42:
1.5 kristaps 43: if ('\0' == *src)
44: return(0);
45:
1.4 kristaps 46: i = hasd = 0;
47:
48: switch (*src) {
49: case ('+'):
50: src++;
51: break;
52: case ('-'):
53: buf[i++] = *src++;
54: break;
55: default:
56: break;
57: }
58:
1.5 kristaps 59: if ('\0' == *src)
60: return(0);
61:
1.4 kristaps 62: while (i < BUFSIZ) {
63: if ( ! isdigit((u_char)*src)) {
64: if ('.' != *src)
65: break;
66: else if (hasd)
67: break;
68: else
69: hasd = 1;
70: }
71: buf[i++] = *src++;
72: }
1.1 kristaps 73:
1.3 kristaps 74: if (BUFSIZ == i || (*src && *(src + 1)))
1.1 kristaps 75: return(0);
76:
1.4 kristaps 77: buf[i] = '\0';
1.1 kristaps 78:
1.3 kristaps 79: switch (*src) {
80: case ('c'):
81: unit = SCALE_CM;
82: break;
83: case ('i'):
84: unit = SCALE_IN;
85: break;
86: case ('P'):
87: unit = SCALE_PC;
88: break;
89: case ('p'):
90: unit = SCALE_PT;
91: break;
92: case ('f'):
93: unit = SCALE_FS;
94: break;
95: case ('v'):
96: unit = SCALE_VS;
97: break;
98: case ('m'):
99: unit = SCALE_EM;
100: break;
101: case ('\0'):
1.5 kristaps 102: if (SCALE_MAX == def)
103: return(0);
104: unit = SCALE_BU;
105: break;
1.3 kristaps 106: case ('u'):
107: unit = SCALE_BU;
108: break;
109: case ('M'):
110: unit = SCALE_MM;
111: break;
112: case ('n'):
113: unit = SCALE_EN;
114: break;
115: default:
1.1 kristaps 116: return(0);
1.3 kristaps 117: }
1.1 kristaps 118:
1.4 kristaps 119: if ((dst->scale = atof(buf)) < 0)
1.3 kristaps 120: dst->scale = 0;
121: dst->unit = unit;
1.4 kristaps 122: dst->pt = hasd;
123:
1.3 kristaps 124: return(1);
1.1 kristaps 125: }
1.6 kristaps 126:
127:
128: /*
129: * Correctly writes the time in nroff form, which differs from standard
130: * form in that a space isn't printed in lieu of the extra %e field for
131: * single-digit dates.
132: */
133: void
134: time2a(time_t t, char *dst, size_t sz)
135: {
136: struct tm tm;
137: char buf[5];
138: char *p;
139: size_t nsz;
140:
141: assert(sz > 1);
142: localtime_r(&t, &tm);
143:
144: p = dst;
145: nsz = 0;
146:
147: dst[0] = '\0';
148:
149: if (0 == (nsz = strftime(p, sz, "%B ", &tm)))
150: return;
151:
152: p += (int)nsz;
153: sz -= nsz;
154:
155: if (0 == strftime(buf, sizeof(buf), "%e, ", &tm))
156: return;
157:
158: nsz = strlcat(p, buf + (' ' == buf[0] ? 1 : 0), sz);
159:
160: if (nsz >= sz)
161: return;
162:
163: p += (int)nsz;
164: sz -= nsz;
165:
166: (void)strftime(p, sz, "%Y", &tm);
167: }
168: