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#include "functions.h"
// Print a debugging message, if debugging enabled
int debugmode;
void debug(char *string) {
if (debugmode) {
printf("DEBUG: %s\n", string);
}
}
// Get stdin line with buffer overrun protection
int getstdin(char *prompt, char *buff, size_t sz) {
int ch, extra;
// Print optional prompt
if (prompt != NULL) {
printf ("%s", prompt);
fflush (stdout);
}
// Get the intput from stdin
if (fgets (buff, sz, stdin) == NULL) {
return NO_INPUT;
}
// If it was too long, there'll be no newline. In that case, we flush
// to end of line so that excess doesn't affect the next call.
if (buff[strlen(buff) - 1] != '\n') { // strlen of the actually entered line, not the original array size
extra = 0;
while (((ch = getchar()) != '\n') && (ch != EOF)) {
extra = 1;
}
return (extra == 1) ? TOO_LONG : OK;
}
// Otherwise remove newline and give string back to caller.
buff[strlen(buff) - 1] = '\0';
return OK;
}
// Append CR-LF to the end of a string (after cleaning up any existing trailing CR or LF)
void appendcrlf(char *string) {
// Make sure it doesn't already end with CR or LF
while (string[strlen(string) - 1] == '\r' || string[strlen(string) - 1] == '\r') {
string[strlen(string) - 1] = '\0';
}
int startlen = strlen(string);
string[startlen] = '\r';
string[startlen + 1] = '\n';
string[startlen + 2] = '\0';
}
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