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Added function for iterating through offsets

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_ 2018-04-01 16:17:58 -07:00
parent 7179aba632
commit 37ce23db73
1 changed files with 22 additions and 4 deletions
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26
main.c
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@ -4,6 +4,21 @@
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
void unpackpld(const char *buffer, struct PldHeader *pldh) {
unsigned int i = 0;
char *wbuffer = NULL; // write buffer that will change.
unsigned int wsize = 0; // size of wbuffer.
for (i; (i + 1) < (pldh -> numOffset); i++) {
printf("start: %x - end: %x\n",
pldh -> offsets[i],
pldh -> offsets[i + 1]);
/* wsize = offsets[i + 1] - offsets[i];
wbuffer = (char*)malloc(sizeof(char) * wsize);
memcpy(wbuffer, buffer[offsets[i]], wsize); */
}
free(wbuffer);
}
void disp_pldheader(struct PldHeader *x) { void disp_pldheader(struct PldHeader *x) {
printf("number of offsets = %i\n", x -> numOffset); printf("number of offsets = %i\n", x -> numOffset);
unsigned int i; unsigned int i;
@ -14,8 +29,10 @@ void disp_pldheader(struct PldHeader *x) {
bool read_pldheader(const char *buffer) { bool read_pldheader(const char *buffer) {
int32_t *n = (int32_t*)buffer; int32_t *n = (int32_t*)buffer;
struct PldHeader *ph = (struct PldHeader*)malloc(sizeof(struct PldHeader)); struct PldHeader *ph = (struct PldHeader*)malloc(
unsigned int size_offsets = sizeof(uint32_t) * n[0]; sizeof(struct PldHeader)
);
uint32_t size_offsets = sizeof(uint32_t) * n[0];
ph -> offsets = (uint32_t*)malloc(size_offsets); ph -> offsets = (uint32_t*)malloc(size_offsets);
if (ph -> offsets == NULL) { if (ph -> offsets == NULL) {
perror("Error 4: "); perror("Error 4: ");
@ -27,6 +44,7 @@ bool read_pldheader(const char *buffer) {
ph -> numOffset = n[0]; ph -> numOffset = n[0];
memcpy(ph -> offsets, buffer + sizeof(int32_t), size_offsets); memcpy(ph -> offsets, buffer + sizeof(int32_t), size_offsets);
disp_pldheader(ph); disp_pldheader(ph);
unpackpld(buffer, ph);
free(ph -> offsets); free(ph -> offsets);
free(ph); free(ph);
return true; return true;
@ -65,11 +83,11 @@ bool readpld(const char *fname) {
int main(int argc, char ** argv) { int main(int argc, char ** argv) {
char *filename = argv[1]; char *filename = argv[1];
bool status = readpld(filename); bool status = readpld(filename);
if (status) { if (status) {
printf("Read OK"); printf("Read OK");
} else { } else {
printf("Read not-OK"); printf("Read not-OK");
} }
return 0; return 0;
} }