128 lines
2.6 KiB
C
128 lines
2.6 KiB
C
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/* f4str.c (c)Copyright Sequiter Software Inc., 1990-1994. All rights reserved. */
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/* Returns a pointer to static string corresponding to the field.
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This string will end in a NULL character.
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*/
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#include "d4all.h"
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#ifndef S4UNIX
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#ifdef __TURBOC__
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#pragma hdrstop
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#endif
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#endif
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#ifndef S4OFF_WRITE
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void S4FUNCTION f4assign( FIELD4 *field, char *str )
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{
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#ifdef S4VBASIC
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if ( c4parm_check( field, 3, E4_F4ASSIGN ) )
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return ;
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#endif
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#ifdef S4DEBUG
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if ( field == 0 || str == 0 )
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e4severe( e4parm, E4_F4ASSIGN ) ;
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#endif
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f4assign_n( field, str, (unsigned)strlen(str) ) ;
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}
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void S4FUNCTION f4assign_n( FIELD4 *field, char *ptr, unsigned ptr_len )
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{
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char *f_ptr ;
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#ifdef S4DEBUG
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if ( field == 0 || ( ptr == 0 && ptr_len ) )
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e4severe( e4parm, E4_F4ASSIGN_N ) ;
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#endif
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f_ptr = f4assign_ptr( field ) ;
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if ( ptr_len > field->len )
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ptr_len = field->len ;
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/* Copy the data into the record buffer. */
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memcpy( f_ptr, ptr, (size_t)ptr_len ) ;
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/* Make the rest of the field blank. */
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memset( f_ptr + ptr_len, (int)' ', (size_t)( field->len - ptr_len ) ) ;
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}
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#endif
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unsigned S4FUNCTION f4ncpy( FIELD4 *field, char *mem_ptr, unsigned mem_len )
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{
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unsigned num_cpy ;
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if ( mem_len == 0 )
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return 0 ;
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#ifdef S4DEBUG
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if ( field == 0 || mem_ptr == 0 )
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e4severe( e4parm, E4_F4NCY ) ;
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#endif
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num_cpy = field->len ;
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if ( mem_len <= num_cpy )
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num_cpy = mem_len - 1 ;
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/* 'f4ptr' returns a pointer to the field within the database record buffer. */
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memcpy( mem_ptr, f4ptr( field ), (size_t)num_cpy ) ;
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mem_ptr[num_cpy] = '\000' ;
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return num_cpy ;
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}
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char *S4FUNCTION f4str( FIELD4 *field )
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{
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CODE4 *code_base ;
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#ifdef S4VBASIC
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if ( c4parm_check( field, 3, E4_F4STR ) )
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return 0 ;
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#endif
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#ifdef S4DEBUG
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if ( field == 0 )
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e4severe( e4parm, E4_F4STR ) ;
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#endif
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code_base = field->data->code_base ;
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if ( code_base->buf_len <= field->len ) /* not room for field length + null */
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u4alloc_again( code_base, &code_base->field_buffer, &code_base->buf_len, field->len + 1 ) ;
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else
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code_base->field_buffer[field->len] = 0 ;
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memcpy( code_base->field_buffer, f4ptr( field ), field->len ) ;
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return code_base->field_buffer ;
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}
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#ifdef S4VB_DOS
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void f4assign_v( FIELD4 *fld, char *data )
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{
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f4assignN ( fld, data, StringLength((char near *)data) ) ;
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}
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void f4assignN ( FIELD4 *fld, char *data, int len )
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{
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char *c_buf;
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if( (c_buf = (char *) u4alloc(len + 1) ) )
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{
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u4vtoc( c_buf, len+1, data ) ;
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f4assign_n( fld, c_buf, len ) ;
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u4free( c_buf );
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}
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else
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e4severe( e4memory, E4_MEMORY_FLD );
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}
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char *f4str_v( FIELD4 *fld )
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{
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return v4str( f4str(fld) ) ;
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}
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#endif
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