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346 lines
9.8 KiB
C++
346 lines
9.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* file: abcell.c
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**
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** Changes:
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** <1> 02Dec1997 stubs
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** <0> 22Oct1997 first draft
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*/
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#ifndef _ABTABLE_
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#include "abtable.h"
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#endif
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#ifndef _ABMODEL_
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#include "abmodel.h"
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#endif
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/*3456789_123456789_123456789_123456789_123456789_123456789_123456789_12345678*/
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/* ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- */
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#if AB_CONFIG_TRACE_orDEBUG_orPRINT
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static const char* AB_Cell_kClassName /*i*/ = "AB_Cell";
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#endif /* end AB_CONFIG_TRACE_orDEBUG_orPRINT*/
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/*| Init: initialize and construct the cell so sCell_Size is at
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**| least inMinSize bytes in size, and contains the content pointed
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**| to by inStartingContent when inStartingContent is non-null.
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**| If inStartingContent is null, then zero the initial content.
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**| The inColumnUid arg cannot be zero or an error will occur; in
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**| fact, inColumnUid must return true from AB_Uid_IsColumn().
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**|
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**|| If strlen(inStartingContent)+1 is greater than inMinSize, then
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**| make a cell that size instead (the plus one is for a null byte). If
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**| both inMinSize and the inStartingContent pointer are zero, allocate
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**| at least a byte to avoid weird edge cases.
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|*/
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AB_MODEL_IMPL(ab_bool)
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AB_Cell_Init(AB_Cell* self, ab_Env* ev, ab_column_uid inColumnUid, /*i*/
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ab_cell_size inMinSize, const char* inStartingContent)
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{
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ab_Env_BeginMethod(ev, AB_Cell_kClassName, "Init")
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ab_cell_length length = 0; /* default to no content */
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if ( !inMinSize ) /* need to make min size positive? */
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inMinSize = 1;
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if ( inStartingContent ) /* have initial content to use? */
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{
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length = strlen(inStartingContent);
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if ( length+1 > inMinSize ) /* length requires more size? */
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inMinSize = length+1;
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}
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if ( inMinSize <= AB_Cell_kMaxCellSize ) /* not too large? */
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{
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if ( AB_Uid_IsColumn(inColumnUid) ) /* column looks valid? */
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{
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char* content = (char*) ev->HeapSafeTagAlloc(inMinSize);
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if ( content )
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{
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XP_MEMSET(content, 0, inMinSize); /* zero all content bytes*/
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self->sCell_Column = inColumnUid;
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self->sCell_Size = inMinSize;
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self->sCell_Length = length;
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self->sCell_Extent = 0; /* database must set this field */
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self->sCell_Content = content;
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if ( length ) /* any initial content to copy? */
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XP_MEMCPY(content, inStartingContent, length);
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}
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}
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else ev->NewAbookFault(AB_Cell_kFaultBadColumnUid);
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}
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else ev->NewAbookFault(AB_Cell_kFaultSizeExceedsMax);
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ab_Env_EndMethod(ev)
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return ev->Good();
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}
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/*| Finalize: deallocate sCell_Content and zero all slots.
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|*/
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AB_MODEL_IMPL(ab_bool)
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AB_Cell_Finalize(AB_Cell* self, ab_Env* ev) /*i*/
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{
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ab_Env_BeginMethod(ev, AB_Cell_kClassName, "Finalize")
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if ( self->sCell_Content )
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ev->HeapSafeTagFree(self->sCell_Content);
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self->sCell_Column = 0;
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self->sCell_Size = 0;
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self->sCell_Length = 0;
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self->sCell_Extent = 0;
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self->sCell_Content = 0;
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ab_Env_EndMethod(ev)
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return ev->Good();
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}
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/*| Grow: increase the cell size sCell_Size to at least inMinSize
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**| and reallocate the sCell_Content space if necessary. But if
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**| sCell_Size is already that big, then do nothing.
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**| True is returned if and only if the environment shows no errors.
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|*/
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AB_MODEL_IMPL(ab_bool)
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AB_Cell_Grow(AB_Cell* self, ab_Env* ev, ab_cell_size inMinSize) /*i*/
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{
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ab_Env_BeginMethod(ev, AB_Cell_kClassName, "Grow")
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ab_cell_size oldSize = self->sCell_Size;
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if ( oldSize < inMinSize ) /* need to grow content? */
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{
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if ( inMinSize <= AB_Cell_kMaxCellSize ) /* not too large? */
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{
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char* newContent = (char*) ev->HeapSafeTagAlloc(inMinSize);
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if ( newContent ) /* allocated new content? */
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{
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char* oldContent = self->sCell_Content;
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ab_num diffSize = inMinSize - oldSize; /* differential */
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char* after = newContent + oldSize; /* after old content */
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XP_MEMSET(after, 0, diffSize); /* clear after copied content */
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if ( oldSize ) /* any old content to copy? */
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XP_MEMCPY(newContent, oldContent, oldSize);
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self->sCell_Content = newContent;
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self->sCell_Size = inMinSize;
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ev->HeapSafeTagFree(oldContent); /* discard old content space */
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}
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}
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else ev->NewAbookFault(AB_Cell_kFaultSizeExceedsMax);
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}
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ab_Env_EndMethod(ev)
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return ev->Good();
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}
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/*3456789_123456789_123456789_123456789_123456789_123456789_123456789_12345678*/
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/*| Copy: make this cell contain the same content as other when capacity
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**| is greater than other's content. Otherwise make self hold as much of
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**| other's content as will fit without making self any larger. (This
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**| method is intended to support AB_Tuple_CopyRowContent().)
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**| True is returned if and only if the environment shows no errors.
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|*/
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AB_MODEL_IMPL(ab_bool)
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AB_Cell_Copy(AB_Cell* self, ab_Env* ev, const AB_Cell* other)
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{
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ab_Env_BeginMethod(ev, AB_Cell_kClassName, "Copy")
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ab_cell_size selfSize = self->sCell_Size;
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if ( selfSize ) /* receiver has some space as expected? */
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{
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char* selfContent = self->sCell_Content;
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ab_cell_size selfRoom = selfSize - 1; /* less end null byte */
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if ( selfRoom ) /* space for more than terminating null? */
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{
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ab_cell_size otherLength = other->sCell_Length;
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if ( otherLength <= other->sCell_Size ) /* rational sizes? */
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{
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if ( otherLength > selfRoom ) /* too much content? */
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otherLength = selfRoom; /* truncate to our capacity */
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XP_MEMCPY(selfContent, other->sCell_Content, otherLength);
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selfContent[ otherLength ] = 0; /* add end null byte */
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self->sCell_Length = otherLength;
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}
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else ev->NewAbookFault(AB_Cell_kFaultLengthExceedsSize);
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}
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else
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selfContent[ 0 ] = 0; /* can only hold empty string */
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}
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else ev->NewAbookFault(AB_Cell_kFaultZeroCellSize);
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ab_Env_EndMethod(ev)
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return ev->Good();
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}
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#if AB_CONFIG_TRACE_orDEBUG_orPRINT
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AB_MODEL(char*) /* abcell.c */
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AB_Cell_AsString(const AB_Cell* self, ab_Env* ev, char* outBuf) /*i*/
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{
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AB_Env* cev = ev->AsSelf();
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const char* at = AB_ColumnUid_AsString(self->sCell_Column, cev);
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if ( !at )
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at = "<name>";
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XP_SPRINTF(outBuf,
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"<ab:cell:str val=\"%.48s\" at=\"#%lX/%.32s\" sz=\"#%lX\" ln=\"%lu\" ex=\"%lu\"/>",
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self->sCell_Content, // val=\"%.64s\"
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(long) self->sCell_Column, // at=\"#%lX
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at, // %.32s\"
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(long) self->sCell_Size, // sz=\"#%lX\"
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(long) self->sCell_Length, // ln=\"%lu\"
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(long) self->sCell_Extent // ex=\"%lu\"
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);
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return outBuf;
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}
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#endif /*AB_CONFIG_TRACE_orDEBUG_orPRINT*/
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#ifdef AB_CONFIG_TRACE
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AB_MODEL_IMPL(void) /* abcell.c */
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AB_Cell_Trace(const AB_Cell* self, ab_Env* ev) /*i*/
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{
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char buf[ AB_Cell_kXmlBufSize ];
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ev->Trace("%.250s", AB_Cell_AsString(self, ev, buf));
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}
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#endif /*AB_CONFIG_TRACE*/
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#ifdef AB_CONFIG_DEBUG
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AB_MODEL_IMPL(void) /* abcell.c */
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AB_Cell_Break(const AB_Cell* self, ab_Env* ev) /*i*/
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{
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char buf[ AB_Cell_kXmlBufSize ];
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ev->Break("%.250s", AB_Cell_AsString(self, ev, buf));
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}
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#endif /*AB_CONFIG_DEBUG*/
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AB_MODEL(void) /* abcell.c */
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AB_Cell_TraceAndBreak(const AB_Cell* self, ab_Env* ev) /*i*/
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{
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#ifdef AB_CONFIG_TRACE
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AB_Cell_Trace(self, ev);
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#endif /*AB_CONFIG_TRACE*/
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#ifdef AB_CONFIG_DEBUG
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AB_Cell_Break(self, ev);
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#endif /*AB_CONFIG_DEBUG*/
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}
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AB_MODEL_IMPL(short) /* abcell.c */
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AB_Cell_AsShort(const AB_Cell* self, ab_Env* ev) /*i*/
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{
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short outShort = 0;
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ab_Env_BeginMethod(ev, AB_Cell_kClassName, "AsShort")
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char* content = self->sCell_Content;
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if ( content )
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{
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if ( *content )
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{
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int value = 0;
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int n = sscanf(content, "%d", &value);
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outShort = value;
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#ifdef AB_CONFIG_DEBUG
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if ( n != 1 )
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AB_Cell_Break(self, ev);
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#endif /*AB_CONFIG_DEBUG*/
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}
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}
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else ev->NewAbookFault(AB_Cell_kFaultNullContent);
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ab_Env_EndMethod(ev)
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return outShort;
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}
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AB_MODEL_IMPL(ab_bool) /* abcell.c */
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AB_Cell_WriteHexLong(AB_Cell* self, ab_Env* ev, long inLong) /*i*/
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{
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ab_Env_BeginMethod(ev, AB_Cell_kClassName, "WriteHexLong")
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char* content = self->sCell_Content;
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if ( content )
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{
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char buf[ 48 ];
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XP_SPRINTF(buf, "%08lX", inLong );
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XP_STRNCPY_SAFE(content, buf, self->sCell_Size);
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self->sCell_Length = XP_STRLEN(content);
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self->sCell_Extent = self->sCell_Length;
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}
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else ev->NewAbookFault(AB_Cell_kFaultNullContent);
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ab_Env_EndMethod(ev)
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return ev->Good();
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}
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AB_MODEL_IMPL(ab_bool) /* abcell.c */
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AB_Cell_WriteShort(AB_Cell* self, ab_Env* ev, short inShort) /*i*/
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{
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ab_Env_BeginMethod(ev, AB_Cell_kClassName, "WriteShort")
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char* content = self->sCell_Content;
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if ( content )
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{
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char buf[ 32 ];
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XP_SPRINTF(buf, "%d", (int) ( inShort & 0x0FFFF ) );
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XP_STRNCPY_SAFE(content, buf, self->sCell_Size);
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self->sCell_Length = XP_STRLEN(content);
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self->sCell_Extent = self->sCell_Length;
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}
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else ev->NewAbookFault(AB_Cell_kFaultNullContent);
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ab_Env_EndMethod(ev)
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return ev->Good();
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}
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AB_MODEL_IMPL(ab_bool) /* abcell.c */
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AB_Cell_WriteBool(AB_Cell* self, ab_Env* ev, ab_bool inBool) /*i*/
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{
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ab_Env_BeginMethod(ev, AB_Cell_kClassName, "WriteBool")
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char* content = self->sCell_Content;
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if ( content )
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{
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if ( self->sCell_Size >= 2 )
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{
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if (inBool)
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*content++ = 't';
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else
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*content++ = 'f';
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*content = '\0';
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self->sCell_Length = 1;
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self->sCell_Extent = 1;
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}
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else ev->NewAbookFault(AB_Cell_kFaultSizeTooSmall);
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}
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else ev->NewAbookFault(AB_Cell_kFaultNullContent);
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ab_Env_EndMethod(ev)
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return ev->Good();
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}
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