1 /*
2 -- CXB30131.C
3 --
4 -- Grant of Unlimited Rights
5 --
6 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
7 -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
8 -- unlimited rights in the software and documentation contained herein.
9 -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
10 -- this public release, the Government intends to confer upon all
11 -- recipients unlimited rights equal to those held by the Government.
12 -- These rights include rights to use, duplicate, release or disclose the
13 -- released technical data and computer software in whole or in part, in
14 -- any manner and for any purpose whatsoever, and to have or permit others
15 -- to do so.
16 --
17 -- DISCLAIMER
18 --
19 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
20 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
21 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
22 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
23 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
24 -- PARTICULAR PURPOSE OF SAID MATERIAL.
25 --*
26 --
27 -- FUNCTION NAME: CXB30131 ("combine_two_strings")
28 --
29 -- FUNCTION DESCRIPTION:
30 -- This C function returns a pointer to the combination of two
31 -- input strings.
32 --
33 -- INPUTS:
34 -- This function requires that two parameters be passed to it.
35 -- The type of both of these parameters are pointer to char (which
36 -- is used to reference an array of chars).
37 --
38 -- PROCESSING:
39 -- The function will create a char array that is equal to the combined
40 -- length of the char arrays referenced by the two input parameters.
41 -- The char elements contained in the char arrays specified by the
42 -- parameters will be combined (in order) into this new char array.
43 --
44 -- OUTPUTS:
45 -- The newly created char array will be returned as the function
46 -- result through the function name. The char arrays referenced by the
47 -- two parameters will be unaffected.
48 --
49 -- CHANGE HISTORY:
50 -- 12 Oct 95 SAIC Initial prerelease version.
51 -- 26 Oct 96 SAIC Modified temp array initialization.
52 -- 15 Feb 99 RLB Repaired to remove non-standard function strdup.
53 --!
54 */
55
56 #include <string.h>
57 #include <stdlib.h>
58
59 char *stringdup (char *s)
60 {
61 char *result = malloc(sizeof(char)*(strlen(s)+1));
62 return strcpy(result,s);
63 }
64
65 char *CXB30131 (char *string1, char *string2)
66
67 /* NOTE: The above function definition should be accepted by an ANSI-C */
68 /* compiler. Older C compilers may reject it; they may, however */
69 /* accept the following three lines. An implementation may comment */
70 /* out the above function definition and uncomment the following */
71 /* one. Otherwise, an implementation must provide the necessary */
72 /* modifications to this C code to satisfy the function */
73 /* requirements (see Function Description). */
74 /* */
75 /* char *CXB30131 (string1, string2) */
76 /* char *string1; */
77 /* char *string2; */
78
79 {
80 char temp[100]; /* Local array that holds the combined strings */
81 int index; /* Loop counter */
82 int length = 0; /* Variable that holds the length of the strings */
83
84 /* Initialize the local array */
85 for (index = 0; index < 100; index++)
86 { temp[index] = 0; }
87
88 /* Use the library function strcpy to copy the contents of string1
89 into temp. */
90 strcpy (temp, string1);
91
92 /* Use the library function strlen to determine the number of
93 characters in the temp array (without the trailing nul). */
94 length = strlen (temp);
95
96 /* Add each character in string2 into the temp array, add nul
97 to the end of the array. */
98 for (index = length; *string2 != '\0'; index++)
99 { temp[index] = *string2++; }
100 temp[index] = '\0';
101
102 /* Use the library function strdup to return a pointer to temp. */
103 return (stringdup(temp));
104 }