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commented things to clarify

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LinlyBoi
2023-08-22 14:48:45 +03:00
parent ad695607b5
commit 26f30dda48
1 changed files with 10 additions and 8 deletions
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18
printf.c
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@@ -10,21 +10,21 @@
**/ **/
int _printf(const char *format, ...) int _printf(const char *format, ...)
{ {
int buff_idx, fmt_idx; int buff_idx, fmt_idx; /* Indexes */
unsigned int identifiers, BUFF_SIZE, printed; unsigned int identifiers, BUFF_SIZE, printed;
char *buffer; char *buffer; /*where non formated things are stored*/
va_list args; va_list args;
va_start(args, format); va_start(args, format);
identifiers = _contains(format, '%'); identifiers = _contains(format, '%'); /* instances of %s, %c etc */
BUFF_SIZE = _strlen(format) - identifiers; BUFF_SIZE = _strlen(format) - identifiers;
buffer = malloc(BUFF_SIZE); buffer = malloc(BUFF_SIZE); /* sized of the non % instances only*/
if (!format) /* No string. No laundry */ if (!format) /* No string. No laundry */
return (0); return (0);
buff_idx = 0; buff_idx = 0; /* was there a way to squish these together? */
fmt_idx = 0; fmt_idx = 0;
printed = 0; printed = 0;
while (*(format + fmt_idx)) while (*(format + fmt_idx))
@@ -35,6 +35,7 @@ int _printf(const char *format, ...)
{ {
_puts(buffer); _puts(buffer);
BUFF_SIZE -= _strlen(buffer); BUFF_SIZE -= _strlen(buffer);
printed += _strlen(buffer);
free(buffer); free(buffer);
buffer = malloc(BUFF_SIZE); buffer = malloc(BUFF_SIZE);
buff_idx = 0; buff_idx = 0;
@@ -42,12 +43,13 @@ int _printf(const char *format, ...)
switch (*(format + fmt_idx + 1)) /*this needs to shrink*/ switch (*(format + fmt_idx + 1)) /*this needs to shrink*/
{ {
case 's': case 's':
_puts(va_arg(args, char*)); printed += _puts(va_arg(args, char*));
break; break;
case 'c': case 'c':
_putchar(va_arg(args, int)); printed += _putchar(va_arg(args, int));
break; break;
case '%': /*add 1 byte*/ case '%': /*add 1 byte*/
printed += _putchar('%');
break; break;
} }
fmt_idx += 2; fmt_idx += 2;
@@ -61,7 +63,7 @@ int _printf(const char *format, ...)
} }
if (*buffer) if (*buffer)
{ {
_puts(buffer); printed += _puts(buffer);
free(buffer); free(buffer);
} }
return (printed); return (printed);