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author | Andreas Baumann <mail@andreasbaumann.cc> | 2017-06-10 21:26:24 +0200 |
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committer | Andreas Baumann <mail@andreasbaumann.cc> | 2017-06-10 21:26:24 +0200 |
commit | d6d1bdfefafff50b7b6d15d218c0a188570be541 (patch) | |
tree | 15ee8de727d0be5d126efda146b2879de0a72773 /src/libc/stdio.c | |
parent | eea5bf4b859eb56c5772c58ca54937a90a10e7ee (diff) | |
download | abaos-d6d1bdfefafff50b7b6d15d218c0a188570be541.tar.gz abaos-d6d1bdfefafff50b7b6d15d218c0a188570be541.tar.bz2 |
some big renames into subdirs of aspects
updated README
removed size_t in sys/types.h and sys/types.h itself, size_t is in stddef.h
Diffstat (limited to 'src/libc/stdio.c')
-rw-r--r-- | src/libc/stdio.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/libc/stdio.c b/src/libc/stdio.c new file mode 100644 index 0000000..1d53f7a --- /dev/null +++ b/src/libc/stdio.c @@ -0,0 +1,106 @@ +#include "stdio.h" +#include "stddef.h" +#include "stdlib.h" +#include "string.h" + +console_t *global_console = NULL; + +int puts( const char *s ) +{ + if( global_console == NULL ) { + return EOF; + } + + console_put_string( global_console, s ); + console_put_newline( global_console ); + + return 1; +} + +int printf( const char *format, ... ) +{ + va_list args; + + va_start( args, format ); + int res = vprintf( format, args ); + va_end( args ); + + return res; +} + +int vprintf( const char *format, va_list args ) +{ + const char *s = format; + int n = 0; + + if( global_console == NULL ) { + return -1; + } + + while( *s != '\0' ) { + switch( *s ) { + case '\n': + console_put_newline( global_console ); + n++; + break; + + case '%': + s++; + if( *s == '\0' ) { + console_put_string( global_console, "<truncated % found at end of format string>" ); + console_put_newline( global_console ); + return -1; + } + + switch( *s ) { + case '%': + console_put_char( global_console, '%' ); + break; + + case 'X': { + char buf[19]; + itoa( va_arg( args, int ), (char *)buf, 16 ); + console_put_string( global_console, buf ); + n += strlen( buf ); + } + break; + + case 'd': { + char buf[19]; + itoa( va_arg( args, int ), (char *)buf, 10 ); + console_put_string( global_console, buf ); + n += strlen( buf ); + } + break; + + case 'c': + console_put_char( global_console, va_arg( args, int ) ); + break; + + case 's': + console_put_string( global_console, va_arg( args, const char * ) ); + break; + + default: + console_put_string( global_console, "<illegal format string %" ); + console_put_char( global_console, *s ); + console_put_string( global_console, ">" ); + console_put_newline( global_console ); + } + + break; + + default: + console_put_char( global_console, *s ); + n++; + } + s++; + } + + return n; +} + +void stdio_set_console( console_t *console ) +{ + global_console = console; +} |