dmtxbytelist.c

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#include <stdio.h>
#include <string.h>
 
#include "dmtx.h"
 
extern DmtxByteList dmtxByteListBuild(DmtxByte *storage, int capacity)
{
    DmtxByteList list;
 
    list.b = storage;
    list.capacity = capacity;
    list.length = 0;
 
    return list;
}
 
extern void dmtxByteListInit(DmtxByteList *list, int length, DmtxByte value, DmtxPassFail *passFail)
{
    if (length > list->capacity) {
        *passFail = DmtxFail;
    } else {
        list->length = length;
        memset(list->b, value, sizeof(DmtxByte) * list->capacity);
        *passFail = DmtxPass;
    }
}
 
extern void dmtxByteListClear(DmtxByteList *list)
{
    memset(list->b, 0x00, sizeof(DmtxByte) * list->capacity);
    list->length = 0;
}
 
extern DmtxBoolean dmtxByteListHasCapacity(DmtxByteList *list)
{
    return (list->length < list->capacity) ? DmtxTrue : DmtxFalse;
}
 
extern void dmtxByteListCopy(DmtxByteList *dst, const DmtxByteList *src, DmtxPassFail *passFail)
{
    int length;
 
    if (dst->capacity < src->length) {
        *passFail = DmtxFail; /* dst must be large enough to hold src data */
    } else {
        /* Copy as many bytes as dst can hold or src can provide (smaller of two) */
        length = (dst->capacity < src->capacity) ? dst->capacity : src->capacity;
 
        dst->length = src->length;
        memcpy(dst->b, src->b, sizeof(unsigned char) * length);
        *passFail = DmtxPass;
    }
}
 
extern void dmtxByteListPush(DmtxByteList *list, DmtxByte value, DmtxPassFail *passFail)
{
    if (list->length >= list->capacity) {
        *passFail = DmtxFail;
    } else {
        list->b[list->length++] = value;
        *passFail = DmtxPass;
    }
}
 
extern DmtxByte dmtxByteListPop(DmtxByteList *list, DmtxPassFail *passFail)
{
    *passFail = (list->length > 0) ? DmtxPass : DmtxFail;
 
    return list->b[--(list->length)];
}
 
extern void dmtxByteListPrint(DmtxByteList *list, char *prefix)
{
    int i;
 
    if (prefix != NULL) {
        dmtxLogInfo("%s", prefix);
    }
 
    for (i = 0; i < list->length; i++) {
        dmtxLogInfo(" %d", list->b[i]);
    }
 
    fputc('\n', stdout);
}