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📄 base64.c(3.69 KB)
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📄 bswap.c(2.01 KB)
📄 chown.c(1.75 KB)
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📄 closefrom.c(1.92 KB)
📄 concat.c(2.91 KB)
📄 copyhostent.c(3.07 KB)
📄 ct.c(2.34 KB)
📄 daemon.c(2.36 KB)
📄 doxygen.c(1.89 KB)
📄 dumpdata.c(2.62 KB)
📄 ecalloc.3(2.71 KB)
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📄 fnmatch.hin(2.3 KB)
📄 freeaddrinfo.c(1.94 KB)
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📄 gai_strerror.c(2.62 KB)
📄 get_default_username.c(2.58 KB)
📄 get_window_size.c(3.38 KB)
📄 getaddrinfo-test.c(4.04 KB)
📄 getaddrinfo.c(10.05 KB)
📄 getaddrinfo_hostspec.c(3.17 KB)
📄 getarg.3(9.56 KB)
📄 getarg.c(15.34 KB)
📄 getarg.h(3.15 KB)
📄 getcap.c(25.29 KB)
📄 getcwd.c(1.94 KB)
📄 getdtablesize.c(2.89 KB)
📄 getegid.c(1.76 KB)
📄 geteuid.c(1.76 KB)
📄 getgid.c(1.75 KB)
📄 gethostname.c(2.34 KB)
📄 getifaddrs.c(32.46 KB)
📄 getipnodebyaddr.c(2.33 KB)
📄 getipnodebyname.c(2.52 KB)
📄 getnameinfo.c(3.51 KB)
📄 getnameinfo_verified.c(3.14 KB)
📄 getopt.c(3.82 KB)
📄 getprogname.c(1.84 KB)
📄 gettimeofday.c(2.43 KB)
📄 getuid.c(1.75 KB)
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📄 glob.c(19.59 KB)
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📄 h_errno.c(1.69 KB)
📄 hex-test.c(3.02 KB)
📄 hex.c(2.85 KB)
📄 hex.h(2.08 KB)
📄 hostent_find_fqdn.c(2.05 KB)
📄 hstrerror.c(2.54 KB)
📄 ifaddrs.hin(2.52 KB)
📄 inet_aton.c(1.94 KB)
📄 inet_ntop.c(3.97 KB)
📄 inet_pton.c(2.94 KB)
📄 initgroups.c(1.75 KB)
📄 innetgr.c(1.79 KB)
📄 install-sh(5.47 KB)
📄 iruserok.c(7.48 KB)
📄 issuid.c(2.01 KB)
📄 k_getpwnam.c(2.08 KB)
📄 k_getpwuid.c(2.07 KB)
📄 localtime_r.c(2.03 KB)
📄 lstat.c(1.76 KB)
📄 memmove.c(2.02 KB)
📄 mini_inetd.c(5.67 KB)
📄 missing(6.14 KB)
📄 mkinstalldirs(671 B)
📄 mkstemp.c(2.4 KB)
📄 ndbm_wrap.c(5.18 KB)
📄 ndbm_wrap.h(3.13 KB)
📄 net_read.c(3.13 KB)
📄 net_write.c(2.9 KB)
📄 parse_bytes-test.c(2.81 KB)
📄 parse_bytes.c(2.55 KB)
📄 parse_bytes.h(2.13 KB)
📄 parse_reply-test.c(3.49 KB)
📄 parse_time-test.c(4.07 KB)
📄 parse_time.3(4.82 KB)
📄 parse_time.c(2.49 KB)
📄 parse_time.h(2.19 KB)
📄 parse_units.c(7.41 KB)
📄 parse_units.h(2.73 KB)
📄 putenv.c(2.51 KB)
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📄 recvmsg.c(2.26 KB)
📄 resolve-test.c(4.91 KB)
📄 resolve.c(21.5 KB)
📄 resolve.h(7.26 KB)
📄 rkpty.c(7.89 KB)
📄 roken-common.h(11.68 KB)
📄 roken.awk(875 B)
📄 roken.h.in(27.79 KB)
📄 roken_gethostby.c(7.26 KB)
📄 rtbl.3(6.53 KB)
📄 rtbl.c(12.11 KB)
📄 rtbl.h(3.61 KB)
📄 search.hin(1007 B)
📄 sendmsg.c(5.37 KB)
📄 setegid.c(1.9 KB)
📄 setenv.c(2.37 KB)
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📄 setprogname.c(2.44 KB)
📄 signal.c(2.34 KB)
📄 simple_exec.c(7.51 KB)
📄 snprintf-test.c(8.16 KB)
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📄 socket.c(7.89 KB)
📄 socket_wrapper.c(40.97 KB)
📄 socket_wrapper.h(4.52 KB)
📄 strcasecmp.c(2 KB)
📄 strcollect.c(2.64 KB)
📄 strdup.c(1.84 KB)
📄 strerror.c(2 KB)
📄 strerror_r.c(2.73 KB)
📄 strftime.c(8.32 KB)
📄 strlcat.c(2.21 KB)
📄 strlcpy.c(2.23 KB)
📄 strlwr.c(1.86 KB)
📄 strncasecmp.c(2.04 KB)
📄 strndup.c(1.96 KB)
📄 strnlen.c(1.79 KB)
📄 strpftime-test.c(6.04 KB)
📄 strpftime-test.h(2.19 KB)
📄 strpool.c(2.74 KB)
📄 strptime.c(9.21 KB)
📄 strsep.c(1.95 KB)
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📄 strtok_r.c(2.05 KB)
📄 strupr.c(1.86 KB)
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📄 test-mem.c(4.96 KB)
📄 test-mem.h(1.85 KB)
📄 test-readenv.c(3 KB)
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📄 tm2time.c(2.01 KB)
📄 tsearch.c(4.17 KB)
📄 unsetenv.c(2.14 KB)
📄 unvis.c(6.39 KB)
📄 verify.c(2.1 KB)
📄 verr.c(1.79 KB)
📄 verrx.c(1.79 KB)
📄 version-script.map(3.33 KB)
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📄 vwarn.c(1.77 KB)
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📄 warnerr.c(2.12 KB)
📄 warnx.c(1.79 KB)
📄 write_pid.c(2.65 KB)
📄 writev.c(2.15 KB)
📄 xdbm.h(1.91 KB)
📄 xfree.c(1.7 KB)

Editing: parse_units.c

/*
 * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <config.h>

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include "roken.h"
#include "parse_units.h"

/*
 * Parse string in `s' according to `units' and return value.
 * def_unit defines the default unit.
 */

static int
parse_something (const char *s, const struct units *units,
		 const char *def_unit,
		 int (*func)(int res, int val, unsigned mult),
		 int init,
		 int accept_no_val_p)
{
    const char *p;
    int res = init;
    unsigned def_mult = 1;

if (def_unit != NULL) {
	const struct units *u;

for (u = units; u->name; ++u) {
	    if (strcasecmp (u->name, def_unit) == 0) {
		def_mult = u->mult;
		break;
	    }
	}
	if (u->name == NULL)
	    return -1;
    }

p = s;
    while (*p) {
	int val;
	char *next;
	const struct units *u, *partial_unit;
	size_t u_len;
	unsigned partial;
	int no_val_p = 0;

while(isspace((unsigned char)*p) || *p == ',')
	    ++p;

val = strtol(p, &next, 0);
	if (p == next) {
	    val = 0;
	    if(!accept_no_val_p)
		return -1;
	    no_val_p = 1;
	}
	p = next;
	while (isspace((unsigned char)*p))
	    ++p;
	if (*p == '\0') {
	    res = (*func)(res, val, def_mult);
	    if (res < 0)
		return res;
	    break;
	} else if (*p == '+') {
	    ++p;
	    val = 1;
	} else if (*p == '-') {
	    ++p;
	    val = -1;
	}
	if (no_val_p && val == 0)
	    val = 1;
	u_len = strcspn (p, ", \t");
	partial = 0;
	partial_unit = NULL;
	if (u_len > 1 && p[u_len - 1] == 's')
	    --u_len;
	for (u = units; u->name; ++u) {
	    if (strncasecmp (p, u->name, u_len) == 0) {
		if (u_len == strlen (u->name)) {
		    p += u_len;
		    res = (*func)(res, val, u->mult);
		    if (res < 0)
			return res;
		    break;
		} else {
		    ++partial;
		    partial_unit = u;
		}
	    }
	}
	if (u->name == NULL) {
	    if (partial == 1) {
		p += u_len;
		res = (*func)(res, val, partial_unit->mult);
		if (res < 0)
		    return res;
	    } else {
		return -1;
	    }
	}
	if (*p == 's')
	    ++p;
    }
    return res;
}

/*
 * The string consists of a sequence of `n unit'
 */

static int
acc_units(int res, int val, unsigned mult)
{
    return res + val * mult;
}

ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
parse_units (const char *s, const struct units *units,
	     const char *def_unit)
{
    return parse_something (s, units, def_unit, acc_units, 0, 0);
}

/*
 * The string consists of a sequence of `[+-]flag'.  `orig' consists
 * the original set of flags, those are then modified and returned as
 * the function value.
 */

static int
acc_flags(int res, int val, unsigned mult)
{
    if(val == 1)
	return res | mult;
    else if(val == -1)
	return res & ~mult;
    else if (val == 0)
	return mult;
    else
	return -1;
}

ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
parse_flags (const char *s, const struct units *units,
	     int orig)
{
    return parse_something (s, units, NULL, acc_flags, orig, 1);
}

/*
 * Return a string representation according to `units' of `num' in `s'
 * with maximum length `len'.  The actual length is the function value.
 */

static int
unparse_something (int num, const struct units *units, char *s, size_t len,
		   int (*print) (char *, size_t, int, const char *, int),
		   int (*update) (int, unsigned),
		   const char *zero_string)
{
    const struct units *u;
    int ret = 0, tmp;

if (num == 0)
	return snprintf (s, len, "%s", zero_string);

for (u = units; num > 0 && u->name; ++u) {
	int divisor;

divisor = num / u->mult;
	if (divisor) {
	    num = (*update) (num, u->mult);
	    tmp = (*print) (s, len, divisor, u->name, num);
	    if (tmp < 0)
		return tmp;
	    if (tmp > (int) len) {
		len = 0;
		s = NULL;
	    } else {
		len -= tmp;
		s += tmp;
	    }
	    ret += tmp;
	}
    }
    return ret;
}

static int
print_unit (char *s, size_t len, int divisor, const char *name, int rem)
{
    return snprintf (s, len, "%u %s%s%s",
		     divisor, name,
		     divisor == 1 ? "" : "s",
		     rem > 0 ? " " : "");
}

static int
update_unit (int in, unsigned mult)
{
    return in % mult;
}

static int
update_unit_approx (int in, unsigned mult)
{
    if (in / mult > 0)
	return 0;
    else
	return update_unit (in, mult);
}

ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
unparse_units (int num, const struct units *units, char *s, size_t len)
{
    return unparse_something (num, units, s, len,
			      print_unit,
			      update_unit,
			      "0");
}

ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
unparse_units_approx (int num, const struct units *units, char *s, size_t len)
{
    return unparse_something (num, units, s, len,
			      print_unit,
			      update_unit_approx,
			      "0");
}

ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
print_units_table (const struct units *units, FILE *f)
{
    const struct units *u, *u2;
    size_t max_sz = 0;

for (u = units; u->name; ++u) {
	max_sz = max(max_sz, strlen(u->name));
    }

for (u = units; u->name;) {
	char buf[1024];
	const struct units *next;

for (next = u + 1; next->name && next->mult == u->mult; ++next)
	    ;

if (next->name) {
	    for (u2 = next;
		 u2->name && u->mult % u2->mult != 0;
		 ++u2)
		;
	    if (u2->name == NULL)
		--u2;
	    unparse_units (u->mult, u2, buf, sizeof(buf));
	    fprintf (f, "1 %*s = %s\n", (int)max_sz, u->name, buf);
	} else {
	    fprintf (f, "1 %s\n", u->name);
	}
	u = next;
    }
}

static int
print_flag (char *s, size_t len, int divisor, const char *name, int rem)
{
    return snprintf (s, len, "%s%s", name, rem > 0 ? ", " : "");
}

static int
update_flag (int in, unsigned mult)
{
    return in - mult;
}

ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
unparse_flags (int num, const struct units *units, char *s, size_t len)
{
    return unparse_something (num, units, s, len,
			      print_flag,
			      update_flag,
			      "");
}

ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
print_flags_table (const struct units *units, FILE *f)
{
    const struct units *u;

for(u = units; u->name; ++u)
	fprintf(f, "%s%s", u->name, (u+1)->name ? ", " : "\n");
}

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Editing: parse_units.c

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