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Diffstat (limited to 'src/vf_string_arrays.c')
| -rw-r--r-- | src/vf_string_arrays.c | 435 |
1 files changed, 435 insertions, 0 deletions
diff --git a/src/vf_string_arrays.c b/src/vf_string_arrays.c new file mode 100644 index 0000000..eee27f4 --- /dev/null +++ b/src/vf_string_arrays.c @@ -0,0 +1,435 @@ +/****************************************************************************** + + (C) Nick Marley, 2001 - + + This software is distributed under the GNU Lesser General Public Licence. + Please read and understand the comments at the top of vf_iface.h before use! + +FILE + $Workfile: vf_access.c $ + $Revision: 1.4 $ + $Author: tilda $ + +ORIGINAL AUTHOR + Nick Marley + +DESCRIPTION + Utility functions handling string arrays - the VSTRARRAY_T type. + +REFERENCES + (none) + +MODIFICATION HISTORY + * $Log: vf_string_arrays.c,v $ + * Revision 1.4 2002/11/03 18:43:16 tilda + * IID619851 - Update and check headers and function prototypes. + * + * Revision 1.3 2002/11/02 18:29:26 tilda + * IID485157 - UI does character conversion based on CHARSET property. + * + * Revision 1.2 2002/10/29 07:19:20 tilda + * Tidy headers. + * + * Revision 1.1 2002/10/26 15:57:11 tilda + * Initial Version + * + *******************************************************************************/ + +#ifndef NORCSID +static const char vf_string_arrays_c_vss_id[] = "$Header: /cvsroot/vformat/src/vformat/src/vf_string_arrays.c,v 1.4 2002/11/03 18:43:16 tilda Exp $"; +#endif + +/*=============================================================================* + ANSI C & System-wide Header Files + *=============================================================================*/ + +#include <common/types.h> + +/*============================================================================* + Interface Header Files + *============================================================================*/ + +#include "vformat/vf_iface.h" + +/*============================================================================* + Local Header File + *============================================================================*/ + +#include "vf_config.h" +#include "vf_malloc.h" +#include "vf_internals.h" +#include "vf_strings.h" +#include "vf_string_arrays.h" + +/*============================================================================* + Public Data + *============================================================================*/ +/* None */ + +/*============================================================================* + Private Defines + *============================================================================*/ +/* None */ + +/*============================================================================* + Private Data Types + *============================================================================*/ +/* None */ + +/*============================================================================* + Private Function Prototypes + *============================================================================*/ +/* None */ + +/*============================================================================* + Private Data + *============================================================================*/ +/* None */ + +/*============================================================================* + Public Function Implementations + *============================================================================*/ + + +/*----------------------------------------------------------------------------* + * NAME + * string_array_contains_string() + * + * DESCRIPTION + * Checks the strings in the indicated array to see if it contains a + * particulr value. Can check a particular index or the whole array. + * Can perform an exact match or check wether one of the strings simply + * contains the value. + * + * RETURNS + * TRUE <=> includes indicated value, FALSE else. + *----------------------------------------------------------------------------*/ + +bool_t string_array_contains_string( + VSTRARRAY_T *p_strarray, /* String array */ + char **pp_string_found, /* String found */ + uint32_t index, /* Which entry, (-1) => any */ + const char *p_string, /* The string we're looking for */ + bool_t exact /* Exact or partial match */ + ) +{ + bool_t ret = FALSE; + uint32_t i; + uint32_t s, e; + + if (index == (-1)) + { + s = 0; + e = p_strarray->n_strings; + } + else + { + s = index; + e = index + 1; + } + + for (i = s;!ret && (i < e);i++) + { + if ((i < p_strarray->n_strings) && p_strarray->pp_strings[i]) + { + if (exact) + { + if (0 == p_stricmp(p_strarray->pp_strings[i], p_string)) + ret = TRUE; + } + else + { + if (p_strstr(p_strarray->pp_strings[i], p_string)) + ret = TRUE; + } + } + + if (ret && pp_string_found) + { + *pp_string_found = p_strarray->pp_strings[i]; + } + } + + return ret; +} + + + + + + +/*----------------------------------------------------------------------------* + * NAME + * add_string_to_array() + * + * DESCRIPTION + * Append string to indicated array. + * + * RETURNS + * TRUE <=> allocation OK, FALSE else. + *----------------------------------------------------------------------------*/ + +bool_t add_string_to_array( + VSTRARRAY_T *p_strarray, /* String array */ + const char *p_string /* String to add */ + ) +{ + char **pp_new; + bool_t ret = FALSE; + + pp_new = vf_realloc(p_strarray->pp_strings, sizeof(char *) * (1 + p_strarray->n_strings)); + + if (pp_new) + { + if (p_string) + { + uint32_t l; + char *p_strcopy; + + l = p_strlen(p_string); + + p_strcopy = vf_malloc(1 + l); + + if (p_strcopy) + { + p_strcpy(p_strcopy, p_string); + + pp_new[p_strarray->n_strings] = p_strcopy; + + ret = TRUE; + } + else + { + vf_free(pp_new); + } + } + else + { + pp_new[p_strarray->n_strings] = NULL; + + ret = TRUE; + } + + if (ret) + { + p_strarray->n_strings += 1; + p_strarray->pp_strings = pp_new; + } + } + + return ret; +} + + + + + +/*----------------------------------------------------------------------------* + * NAME + * free_string_array_contents() + * + * DESCRIPTION + * Delete contents of a string array. The structure itself is not free()d. + * + * RETURNS + * (none) + *----------------------------------------------------------------------------*/ + +void free_string_array_contents( + VSTRARRAY_T *p_strarray /* String array */ + ) +{ + if (p_strarray && p_strarray->pp_strings) + { + uint32_t i; + + for (i = 0;i < p_strarray->n_strings;i++) + { + if (p_strarray->pp_strings[i]) + { + vf_free(p_strarray->pp_strings[i]); + p_strarray->pp_strings[i] = NULL; + } + } + + vf_free(p_strarray->pp_strings); + p_strarray->pp_strings = NULL; + + p_strarray->n_strings = 0; + } +} + + + + + + + +/*----------------------------------------------------------------------------* + * NAME + * append_to_curr_string() + * + * DESCRIPTION + * Append characters to the current string in a string array. + * + * RETURNS + * TRUE <=> allocation OK, FALSE else. + *----------------------------------------------------------------------------*/ + +bool_t append_to_curr_string( + VSTRARRAY_T *p_strarray, /* String array */ + uint32_t *p_length, /* Pointer to length, NULL if zero terminated */ + const char *p_chars, /* Characters to append */ + uint32_t numchars /* Number of characters */ + ) +{ + bool_t ret = TRUE; + + if (p_strarray && !p_strarray->pp_strings) + { + ret = add_string_to_array(p_strarray, ""); + } + + if (ret) + { + ret = append_to_pointer(&(p_strarray->pp_strings[p_strarray->n_strings - 1]), p_length, p_chars, numchars); + } + + return ret; +} + + + + + + + +/*----------------------------------------------------------------------------* + * NAME + * append_to_pointer() + * + * DESCRIPTION + * Append characters to indicated pointer. Handles both NULL terminated + * strings (for simple 7-bit values) and buffer/length pairs. Passing + * the p_length field indicates that we're building up binary data. + * + * RETURNS + * TRUE <=> allocation OK, FALSE else. + *----------------------------------------------------------------------------*/ + +bool_t append_to_pointer( + char **pp_string, /* String we're appending to */ + uint32_t *p_length, /* Pointer to length, NULL if ZT */ + const char *p_chars, /* Chars we're appending */ + int numchars /* Number of chars we're appending */ + ) +{ + bool_t ok = FALSE; + + if (pp_string) + { + int newlen, currlen; + char *p_new; + + newlen = numchars; + + if (*pp_string) + { + currlen = p_length ? *p_length : p_strlen(*pp_string); + + newlen += currlen; + } + else + { + currlen = 0; + } + + p_new = vf_realloc(*pp_string, newlen + (p_length ? 0 : 1)); + + if (p_new) + { + p_memcpy(p_new + currlen, p_chars, numchars); + + if (p_length) + { + *p_length = newlen; + } + else + { + p_new[newlen] = '\0'; + } + + *pp_string = p_new; + ok = TRUE; + } + } + + return ok; +} + + + + + + + +/*----------------------------------------------------------------------------* + * NAME + * set_string_array_entry() + * + * DESCRIPTION + * Set indicated entry in a string array. + * + * RETURNS + * TRUE <=> allocation OK, FALSE else. + *----------------------------------------------------------------------------*/ + +bool_t set_string_array_entry( + VSTRARRAY_T *p_strarray, /* String array */ + const char *p_string, /* String to insert */ + uint32_t n_string /* Insertion point */ + ) +{ + bool_t ret = FALSE; + + if (n_string < p_strarray->n_strings) + { + if (p_strarray->pp_strings[n_string]) + { + vf_free(p_strarray->pp_strings[n_string]); + p_strarray->pp_strings[n_string] = NULL; + } + + if (p_string) + { + uint32_t len = p_strlen(p_string); + + p_strarray->pp_strings[n_string] = vf_malloc(1 + len); + + if (p_strarray->pp_strings[n_string]) + { + p_strcpy(p_strarray->pp_strings[n_string], p_string); + + ret = TRUE; + } + } + else + { + /* NULL = "delete" */ + + ret = TRUE; + } + } + + return ret; +} + + +/*============================================================================* + Private Function Implementations + *============================================================================*/ +/* None */ + +/*============================================================================* + End Of File + *============================================================================*/ |