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ADD: string functions (@merlokk)

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This commit is contained in:
iceman1001 2017-10-20 14:39:42 +02:00
commit 79dd43dbd2
2 changed files with 35 additions and 1 deletions
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33
client/util.c
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@ -118,7 +118,7 @@ void FillFileNameByUID(char *fileName, uint8_t *uid, char *ext, int byteCount) {
// printing and converting functions
void print_hex(const uint8_t * data, const size_t len) {
size_t i;
for (i=0; i < len; ++i)
for (i=0; i < len; i++)
printf("%02x ", data[i]);
printf("\n");
}
@ -682,3 +682,34 @@ extern void str_lower(char *s ){
for(int i=0; i < strlen(s); i++)
s[i] = tolower( s[i] );
}
// Replace unprintable characters with a dot in char buffer
extern void clean_ascii(unsigned char *buf, size_t len) {
for (size_t i = 0; i < len; i++) {
if (!isprint(buf[i]))
buf[i] = '.';
}
}
// replace \r \n to \0
extern void strcleanrn(char *buf, size_t len) {
strcreplace(buf, len, '\n', '\0');
strcreplace(buf, len, '\r', '\0');
}
// replace char in buffer
extern void strcreplace(char *buf, size_t len, char from, char to) {
for (size_t i = 0; i < len; i++) {
if (buf[i] == from)
buf[i] = to;
}
}
extern char *strmcopy(char *buf) {
char * str = NULL;
if ((str = (char*) malloc(strlen(buf) + 1)) != NULL) {
memset(str, 0, strlen(buf) + 1);
strcpy(str, buf);
}
return str;
}

3
client/util.h
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@ -144,4 +144,7 @@ extern uint64_t HornerScheme(uint64_t num, uint64_t divider, uint64_t factor);
extern int num_CPUs(void); // number of logical CPUs
extern void str_lower(char* s); // converts string to lower case
extern void strcleanrn(char *buf, size_t len);
extern void strcreplace(char *buf, size_t len, char from, char to);
extern char *strmcopy(char *buf);
#endif