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- RXSTRING.LIB - Library of functions for RXSTRING's
-
-
-
- The RXSTRING.LIB library provides analogues of many of the standard C library
- functions for the RXSTRING structure (which is used in conjunction with the
- REXX interpreter), as well as a sampling of functions which convert standard
- C strings into RXSTRING's.
-
- The functions provided for OS/2 2.0 are 32-bit only. They must be called
- from 32-bit code. For 16-bit RXSTRING functions, use the 1.2 or 1.3 OS/2 Toolkit
- version of RXSTRING.LIB
-
- The following functions are available:
-
- Group 1: Numeric conversion functions
-
- INT rxtoi(RXSTRING);
- LONG rxtol(RXSTRING);
- ULONG rxtoul(RXSTRING);
-
- - these functions convert RXSTRING's into integer values, similar to the
- atoi(), atol(), and atoul() functions
-
- Group 2: File I/O functions
-
- LONG rxwrite(HFILE, RXSTRING);
- LONG rxread(HFILE, PRXSTRING);
- VOID rxprint(RXSTRING)
-
- - these functions will read and write RXSTRING's, including structure
- information, to and from a file, as well as writing the data contained
- in an RXSTRING to stdout
-
- Group 3: Copy / Conversion functions
-
- RXSTRING rxstrdup(RXSTRING);
- RXSTRING rxmemcpy(PRXSTRING, PRXSTRING, ULONG);
- RXSTRING rxstrcpy(PRXSTRING, PRXSTRING);
- RXSTRING rxstrncpy(PRXSTRING, PRXSTRING, ULONG);
- RXSTRING rxstrcat(PRXSTRING, PRXSTRING);
- RXSTRING rxstrncat(PRXSTRING, PRXSTRING, ULONG);
- RXSTRING strdup2rx(PUCHAR, ULONG);
- RXSTRING memcpy2rx(PRXSTRING, PUCHAR, ULONG);
- RXSTRING strcpy2rx(PRXSTRING, PSZ);
- RXSTRING strcat2rx(PRXSTRING, PSZ);
- RXSTRING strncat2rx(PRXSTRING, PSZ, ULONG);
-
- - these functions will duplicate, copy and/or concatenate RXSTRING's with
- RXSTRING's and RXSTRING's with standard strings/buffers
-
- NOTE: Except for the "dup" functions, all of the functions require that
- the destination string contain sufficient storage for completion
- of the requested operation. The concatenation functions begin
- appending at the current length of the RXSTRING. Therefore,
- enough storage should be available for the original length plus
- the length of the data to be added to the string.
-
- Group 4: Comparison / Character functions
-
- LONG rxstrcmp(PRXSTRING, PRXSTRING);
- LONG rxstricmp(PRXSTRING, PRXSTRING);
- LONG rxmemcmp(PRXSTRING, PRXSTRING, ULONG);
- LONG rxmemicmp(PRXSTRING, PRXSTRING, ULONG);
- PUCHAR rxstrchr(PRXSTRING, UCHAR);
- PUCHAR rxstrrchr(PRXSTRING, UCHAR);
-
- - these functions are analogues of the standard C library comparison
- functions (strcmp, stricmp, memcmp, and memicmp) and character
- search functions (strchr and strrchr), and return values similar to
- those functions
-
- Group 5: Miscellaneous functions
-
- RXSTRING rxalloc(ULONG);
- VOID rxfree(RXSTRING);
- VOID rxstrnset(RXSTRING, UCHAR, ULONG);
- ULONG rxstrlen(RXSTRING);
- RXSTRING rxset_length(PRXSTRING, ULONG);
- RXSTRING rxset_null(PRXSTRING);
- RXSTRING rxset_zerolen(PRXSTRING);
- RXSTRING rxreturn_value(PRXSTRING, PUCHAR, ULONG);
- PUCHAR _make_hptr(RXSTRING);
-
- - the first three functions handle allocating, freeing, and overwriting
- RXSTRING structures. The rxstrlen and rxset_length functions retrieve
- and set the length information contained in RXSTRING's without
- affecting the associated memory for the string. The rxset_null function
- sets the rxstring to null, similarly rxset_zerolen function sets the
- rxstring to a zero length rxstring. The _make_hptr function returns a
- pointer to the data buffer associated with an RXSTRING, if any
- exists. The rxreturn_value function may be used to replace the logic
- for figuring out if you should use the preallocated buffer for
- return values or create your own buffer. The preallocated rxstring
- return value is used with subcommands, external functions, and
- variable pool.
-