usr/src/cmd/make/bin/macro.cc

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 /*
  27  *      macro.cc
  28  *
  29  *      Handle expansion of make macros
  30  */
  31
  32 /*
  33  * Included files
  34  */
  35 #include <mk/defs.h>
  36 #include <mksh/macro.h>         /* getvar(), expand_value() */
  37 #include <mksh/misc.h>          /* getmem() */
  38
  39 /*
  40  * Defined macros
  41  */
  42
  43 /*
  44  * typedefs & structs
  45  */
  46
  47 /*
  48  * Static variables
  49  */
  50
  51 /*
  52  * File table of contents
  53  */
  54
  55 void
  56 setvar_append(register Name name, register Name value)
  57 {
  58         register Property       macro_apx = get_prop(name->prop, macro_append_prop);
  59         register Property       macro = get_prop(name->prop, macro_prop);
  60         int                     length;
  61         String_rec              destination;
  62         wchar_t                 buffer[STRING_BUFFER_LENGTH];
  63         register Chain          chain;
  64         Name                    val = NULL;
  65
  66         if(macro_apx == NULL) {
  67                 macro_apx = append_prop(name, macro_append_prop);
  68                 if(macro != NULL) {
  69                         macro_apx->body.macro_appendix.value = macro->body.macro.value;
  70                 }
  71         }
  72
  73         val = macro_apx->body.macro_appendix.value_to_append;
  74
  75         INIT_STRING_FROM_STACK(destination, buffer);
  76         buffer[0] = 0;
  77         if (val != NULL) {
  78                 APPEND_NAME(val,
  79                               &destination,
  80                               (int) val->hash.length);
  81                 if (value != NULL) {
  82                         MBTOWC(wcs_buffer, " ");
  83                         append_char(wcs_buffer[0], &destination);
  84                 }
  85         }
  86         if (value != NULL) {
  87                 APPEND_NAME(value,
  88                               &destination,
  89                               (int) value->hash.length);
  90         }
  91         value = GETNAME(destination.buffer.start, FIND_LENGTH);
  92         if (destination.free_after_use) {
  93                 retmem(destination.buffer.start);
  94         }
  95         macro_apx->body.macro_appendix.value_to_append = value;
  96
  97         SETVAR(name, empty_name, true);
  98 }
  99
 100 /*
 101  *      setvar_envvar()
 102  *
 103  *      This function scans the list of environment variables that have
 104  *      dynamic values and sets them.
 105  *
 106  *      Parameters:
 107  *
 108  *      Global variables used:
 109  *              envvar          A list of environment vars with $ in value
 110  */
 111 void
 112 setvar_envvar(void)
 113 {
 114         wchar_t                 buffer[STRING_BUFFER_LENGTH];
 115         int                     length;
 116         register        char    *mbs, *tmp_mbs_buffer = NULL;
 117         register        char    *env, *tmp_mbs_buffer2 = NULL;
 118         Envvar                  p;
 119         String_rec              value;
 120
 121         for (p = envvar; p != NULL; p = p->next) {
 122                 if (p->already_put
 123                     ) {
 124                         continue;
 125                 }
 126                 INIT_STRING_FROM_STACK(value, buffer);
 127                 expand_value(p->value, &value, false);
 128                 if ((length = wcslen(value.buffer.start)) >= MAXPATHLEN) {
 129                         mbs = tmp_mbs_buffer = getmem((length + 1) * MB_LEN_MAX);
 130                         (void) wcstombs(mbs,
 131                                         value.buffer.start,
 132                                         (length + 1) * MB_LEN_MAX);
 133                 } else {
 134                         mbs = mbs_buffer;
 135                         WCSTOMBS(mbs, value.buffer.start);
 136                 }
 137                 length = 2 + strlen(p->name->string_mb) + strlen(mbs);
 138                 if (!p->already_put || length > (MAXPATHLEN * MB_LEN_MAX)) {
 139                         env = tmp_mbs_buffer2 = getmem(length);
 140                 } else {
 141                         env = mbs_buffer2;
 142                 }
 143                 (void) sprintf(env,
 144                                "%s=%s",
 145                                p->name->string_mb,
 146                                mbs);
 147                 if (!p->already_put) {
 148                         (void) putenv(env);
 149                         p->already_put = true;
 150                         if (p->env_string) {
 151                                 retmem_mb(p->env_string);
 152                         }
 153                         p->env_string = env;
 154                         tmp_mbs_buffer2 = NULL; // We should not return this memory now
 155                 }
 156                 if (tmp_mbs_buffer2) {
 157                         retmem_mb(tmp_mbs_buffer2);
 158                         tmp_mbs_buffer2 = NULL;
 159                 }
 160                 if (tmp_mbs_buffer) {
 161                         retmem_mb(tmp_mbs_buffer);
 162                         tmp_mbs_buffer = NULL;
 163                 }
 164         }
 165 }
 166
 167