dmlib: src/dmgrowbuf.c annotate

annotate src/dmgrowbuf.c @ 1699:f71cd6691e05

Implement dmGrowBufGetU8().

author	Matti Hamalainen <ccr@tnsp.org>
date	Tue, 05 Jun 2018 15:02:56 +0300
parents	1036b0dcccb5
children	a2e65aa47554

rev	line source
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	1 /*
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	2 * DMLib
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	3 * -- Growable buffer implementation
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	4 * Programmed and designed by Matti 'ccr' Hamalainen
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	5 * (C) Copyright 2018 Tecnic Software productions (TNSP)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	6 */
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	7 #include "dmgrowbuf.h"
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	8
1536 064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	9 //#define DM_GROWBUF_DEBUG 1
064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	10
064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	11 #ifdef DM_GROWBUF_DEBUG
064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	12 # define DM_DBG(...) do { fprintf(stderr, __VA_ARGS__); } while (0)
064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	13 #else
064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	14 # define DM_DBG(...) do { } while (0)
064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	15 #endif
064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	16
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	17
1694 e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	18 int dmGrowBufInit(DMGrowBuf *buf)
1458 b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	19 {
1694 e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	20 DM_DBG("dmGrowBufInit(%p)\n", buf);
1687 383ca5f6e78b Cosmetics. Matti Hamalainen <ccr@tnsp.org> parents: 1536 diff changeset	21
1458 b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	22 if (buf == NULL)
b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	23 return DMERR_NULLPTR;
b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	24
b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	25 memset(buf, 0, sizeof(DMGrowBuf));
b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	26
1694 e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	27 return DMERR_OK;
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	28 }
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	29
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	30
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	31 int dmGrowBufAlloc(DMGrowBuf *buf, const size_t initial, const size_t mingrow)
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	32 {
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	33 int res;
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	34
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	35 DM_DBG("dmGrowBufAlloc(%p, %" DM_PRIu_SIZE_T ", %" DM_PRIu_SIZE_T ")\n",
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	36 buf, initial, mingrow);
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	37
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	38 if ((res = dmGrowBufInit(buf)) != DMERR_OK)
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	39 return res;
e568535e1a96 Backed out changeset 9611ecd2c4fb Matti Hamalainen <ccr@tnsp.org> parents: 1693 diff changeset	40
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	41 buf->len = 0;
1531 260bf529a8f2 Implement current len/offs push/pop for growbuf. Matti Hamalainen <ccr@tnsp.org> parents: 1530 diff changeset	42 buf->offs = 0;
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	43 buf->size = initial;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	44 buf->mingrow = mingrow;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	45 buf->allocated = FALSE;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	46
1509 15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	47 // Allocate the data
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	48 if ((buf->data = dmMalloc0(initial)) == NULL)
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	49 return DMERR_MALLOC;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	50
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	51 return DMERR_OK;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	52 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	53
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	54
1458 b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	55 int dmGrowBufNew(DMGrowBuf **pbuf, const size_t initial, const size_t mingrow)
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	56 {
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	57 int res;
1458 b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	58 if (pbuf == NULL)
b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	59 return DMERR_NULLPTR;
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	60
1687 383ca5f6e78b Cosmetics. Matti Hamalainen <ccr@tnsp.org> parents: 1536 diff changeset	61 DM_DBG("dmGrowBufNew(%p, %" DM_PRIu_SIZE_T ", %" DM_PRIu_SIZE_T ")\n",
383ca5f6e78b Cosmetics. Matti Hamalainen <ccr@tnsp.org> parents: 1536 diff changeset	62 pbuf, initial, mingrow);
383ca5f6e78b Cosmetics. Matti Hamalainen <ccr@tnsp.org> parents: 1536 diff changeset	63
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	64 if ((*pbuf = dmMalloc0(sizeof(DMGrowBuf))) == NULL)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	65 return DMERR_MALLOC;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	66
1458 b2dd6a72d162 Adjust semantics of growbuf and add new function. Matti Hamalainen <ccr@tnsp.org> parents: 1455 diff changeset	67 if ((res = dmGrowBufAlloc(*pbuf, initial, mingrow)) != DMERR_OK)
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	68 {
1459 1155f4bc4afc More work on growbuf. Matti Hamalainen <ccr@tnsp.org> parents: 1458 diff changeset	69 // The "allocated" flag has not yet been set
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	70 dmGrowBufFree(*pbuf);
1459 1155f4bc4afc More work on growbuf. Matti Hamalainen <ccr@tnsp.org> parents: 1458 diff changeset	71
1155f4bc4afc More work on growbuf. Matti Hamalainen <ccr@tnsp.org> parents: 1458 diff changeset	72 // .. thus free the allocated struct here
1155f4bc4afc More work on growbuf. Matti Hamalainen <ccr@tnsp.org> parents: 1458 diff changeset	73 dmFreeR(pbuf);
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	74 return res;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	75 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	76
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	77 (*pbuf)->allocated = TRUE;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	78 return res;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	79 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	80
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	81
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	82 void dmGrowBufFree(DMGrowBuf *buf)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	83 {
1536 064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	84 DM_DBG("dmGrowBufFree(%p)\n", buf);
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	85 if (buf != NULL)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	86 {
1536 064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	87 DM_DBG(
064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	88 " buf->data = %p\n"
064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	89 " buf->allocated = %s\n",
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	90 buf->data, buf->allocated ? "YES" : "NO");
1536 064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	91
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	92 dmFreeR(&buf->data);
1531 260bf529a8f2 Implement current len/offs push/pop for growbuf. Matti Hamalainen <ccr@tnsp.org> parents: 1530 diff changeset	93
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	94 if (buf->allocated)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	95 dmFree(buf);
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	96 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	97 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	98
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	99
1530 94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	100 static BOOL dmGrowBufRealloc(DMGrowBuf *buf, const size_t nsize, const BOOL clear)
94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	101 {
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	102 DM_DBG("dmGrowBufRealloc(%p):\n"
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	103 " size=%" DM_PRIu_SIZE_T ", nsize=" DM_PRIu_SIZE_T
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	104 ", nstack=%d, offs=%" DM_PRIu_SIZE_T "\n",
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	105 buf, buf->size, nsize, buf->nstack, buf->offs);
1536 064fc2e3ee64 Add compile-time debugging information to DMGrowBuf. Matti Hamalainen <ccr@tnsp.org> parents: 1531 diff changeset	106
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	107 // Can't be smaller than current size!
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	108 if (nsize < buf->size)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	109 return FALSE;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	110
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	111 if ((buf->data = dmRealloc(buf->data, nsize)) == NULL)
1530 94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	112 return FALSE;
94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	113
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	114 // For buffers growing backwards, we must move the
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	115 // current data to the end of the buffer ..
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	116 size_t clrsize = nsize - buf->size;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	117 if (buf->backwards)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	118 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	119 memmove(buf->data + clrsize, buf->data, clrsize);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	120 buf->offs += clrsize;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	121 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	122
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	123 // Check if we need to clear the newly allocated area?
1530 94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	124 if (clear)
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	125 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	126 if (buf->backwards)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	127 memset(buf->data, 0, clrsize);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	128 else
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	129 memset(buf->data + buf->size, 0, clrsize);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	130 }
1530 94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	131
94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	132 buf->size = nsize;
94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	133
94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	134 return TRUE;
94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	135 }
94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	136
94eb6a8a7d56 Add helper function dmGrowBufRealloc() to handle the common case of Matti Hamalainen <ccr@tnsp.org> parents: 1509 diff changeset	137
1509 15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	138 //
15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	139 // Grow the buffer by "amount" bytes, but at least by buf->mingrow,
15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	140 // if there is not enough space for at least that amount compared to
15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	141 // current buffer "len".
15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	142 //
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	143 BOOL dmGrowBufGrow(DMGrowBuf *buf, const size_t amount)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	144 {
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	145 size_t grow = (amount > buf->mingrow) ? amount : buf->mingrow;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	146
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	147 if (buf->data == NULL \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	148 (buf->backwards && amount >= buf->offs) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	149 (!buf->backwards && buf->offs + amount >= buf->size))
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	150 {
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	151 if (!dmGrowBufRealloc(buf, buf->size + grow, TRUE))
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	152 return FALSE;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	153 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	154
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	155 buf->len += amount;
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	156 return TRUE;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	157 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	158
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	159
1509 15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	160 //
15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	161 // Grow the buffer if "nsize" is larger than the current buffer size.
15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	162 // Buffer is enlarged to nsize + mingrow.
15afe578f0ae Add few comments to clarify things. Matti Hamalainen <ccr@tnsp.org> parents: 1508 diff changeset	163 //
1455 a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	164 BOOL dmGrowBufCheckGrow(DMGrowBuf *buf, const size_t nsize)
a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	165 {
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	166 if (buf->data == NULL \|\| nsize > buf->size)
1455 a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	167 {
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	168 if (!dmGrowBufRealloc(buf, nsize + buf->mingrow, TRUE))
1455 a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	169 return FALSE;
a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	170 }
a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	171
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	172 buf->len = nsize;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	173 return TRUE;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	174 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	175
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	176
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	177 static void dmGrowBufUpdate(DMGrowBuf *buf)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	178 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	179 if (buf->offs < buf->min_offs)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	180 buf->min_offs = buf->offs;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	181
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	182 if (buf->offs > buf->max_offs)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	183 buf->max_offs = buf->offs;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	184 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	185
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	186
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	187 BOOL dmGrowBufPut(DMGrowBuf buf, const Uint8 data, const size_t len)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	188 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	189 if (data == NULL)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	190 return FALSE;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	191
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	192 if (!dmGrowBufGrow(buf, len))
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	193 return FALSE;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	194
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	195 if (buf->backwards)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	196 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	197 if (buf->literal)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	198 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	199 buf->offs -= len;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	200 memcpy(buf->data + buf->offs, data, len);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	201 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	202 else
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	203 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	204 for (size_t n = 0; n < len; n++)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	205 buf->data[buf->offs--] = data[n];
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	206 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	207 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	208 else
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	209 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	210 memcpy(buf->data + buf->offs, data, len);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	211 buf->offs += len;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	212 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	213
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	214 dmGrowBufUpdate(buf);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	215
1455 a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	216 return TRUE;
a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	217 }
a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	218
a957b318fbe2 Add dmGrowBufCheckGrow() function. Matti Hamalainen <ccr@tnsp.org> parents: 1454 diff changeset	219
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	220 BOOL dmGrowBufPutU8(DMGrowBuf *buf, const Uint8 value)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	221 {
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	222 if (!dmGrowBufGrow(buf, sizeof(Uint8)))
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	223 return FALSE;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	224
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	225 buf->data[buf->offs] = value;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	226 if (buf->backwards)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	227 buf->offs--;
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	228 else
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	229 buf->offs++;
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	230
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	231 dmGrowBufUpdate(buf);
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	232
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	233 return TRUE;
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	234 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	235
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	236
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	237 BOOL dmGrowBufPutU16BE(DMGrowBuf *buf, const Uint16 val)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	238 {
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	239 if (buf->literal && buf->backwards)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	240 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	241 return
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	242 !dmGrowBufPutU8(buf, val & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	243 !dmGrowBufPutU8(buf, (val >> 8) & 0xff);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	244 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	245 else
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	246 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	247 return
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	248 !dmGrowBufPutU8(buf, (val >> 8) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	249 !dmGrowBufPutU8(buf, val & 0xff);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	250 }
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	251 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	252
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	253
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	254 BOOL dmGrowBufPutU16LE(DMGrowBuf *buf, const Uint16 val)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	255 {
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	256 if (buf->literal && buf->backwards)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	257 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	258 return
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	259 !dmGrowBufPutU8(buf, (val >> 8) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	260 !dmGrowBufPutU8(buf, val & 0xff);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	261 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	262 else
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	263 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	264 return
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	265 !dmGrowBufPutU8(buf, val & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	266 !dmGrowBufPutU8(buf, (val >> 8) & 0xff);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	267 }
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	268 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	269
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	270
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	271 BOOL dmGrowBufPutU32BE(DMGrowBuf *buf, const Uint32 val)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	272 {
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	273 if (buf->literal && buf->backwards)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	274 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	275 return
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	276 !dmGrowBufPutU8(buf, (val >> 24) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	277 !dmGrowBufPutU8(buf, (val >> 16) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	278 !dmGrowBufPutU8(buf, (val >> 8) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	279 !dmGrowBufPutU8(buf, val & 0xff);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	280 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	281 else
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	282 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	283 return
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	284 !dmGrowBufPutU8(buf, val & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	285 !dmGrowBufPutU8(buf, (val >> 8) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	286 !dmGrowBufPutU8(buf, (val >> 16) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	287 !dmGrowBufPutU8(buf, (val >> 24) & 0xff);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	288 }
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	289 }
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	290
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	291
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	292 BOOL dmGrowBufPutU32LE(DMGrowBuf *buf, const Uint32 val)
fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	293 {
1697 1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	294 if (buf->literal && buf->backwards)
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	295 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	296 return
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	297 !dmGrowBufPutU8(buf, val & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	298 !dmGrowBufPutU8(buf, (val >> 8) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	299 !dmGrowBufPutU8(buf, (val >> 16) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	300 !dmGrowBufPutU8(buf, (val >> 24) & 0xff);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	301 }
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	302 else
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	303 {
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	304 return
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	305 !dmGrowBufPutU8(buf, (val >> 24) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	306 !dmGrowBufPutU8(buf, (val >> 16) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	307 !dmGrowBufPutU8(buf, (val >> 8) & 0xff) \|\|
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	308 !dmGrowBufPutU8(buf, val & 0xff);
1036b0dcccb5 Refactor DMGrowBuf so that there can be buffers that grow "backwards". Matti Hamalainen <ccr@tnsp.org> parents: 1694 diff changeset	309 }
1454 fff3b58d031c Add a growable buffer implementation. Matti Hamalainen <ccr@tnsp.org> parents: diff changeset	310 }
1699 f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	311
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	312
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	313 BOOL dmGrowBufGetU8(DMGrowBuf buf, Uint8 value)
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	314 {
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	315 if (buf->backwards && buf->offs > 0)
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	316 {
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	317 *value = buf->data[buf->offs];
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	318 buf->offs--;
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	319 return TRUE;
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	320 }
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	321 else
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	322 if (!buf->backwards && buf->offs < buf->len)
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	323 {
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	324 *value = buf->data[buf->offs];
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	325 buf->offs++;
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	326 return TRUE;
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	327 }
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	328
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	329 return FALSE;
f71cd6691e05 Implement dmGrowBufGetU8(). Matti Hamalainen <ccr@tnsp.org> parents: 1697 diff changeset	330 }

Mercurial > hg > dmlib

annotate src/dmgrowbuf.c @ 1699:f71cd6691e05