utilites/include
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include/ascii.h
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64
include/ascii.h
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#ifndef _ASCII_H
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# define _ASCII_H
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# define ASCII_MAX_VALUE 0x7f
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# define ASCII_ALPHA_UPPER "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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# define ASCII_ALPHA_LOWER "abcdefghijklmnopqrstuvwxyz"
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# define ASCII_BINARY_DIGITS_UPPER "01"
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# define ASCII_BINARY_DIGITS_LOWER ASCII_BINARY_DIGITS_UPPER
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# define ASCII_OCTAL_DIGITS_UPPER ASCII_BINARY_DIGITS_UPPER "234567"
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# define ASCII_OCTAL_DIGITS_LOWER ASCII_OCTAL_DIGITS_UPPER
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# define ASCII_DECIMAL_DIGITS_UPPER ASCII_OCTAL_DIGITS_UPPER "89"
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# define ASCII_DECIMAL_DIGITS_LOWER ASCII_DECIMAL_DIGITS_UPPER
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# define ASCII_HEXADECIMAL_DIGITS_UPPER \
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ASCII_DECIMAL_DIGITS_UPPER "ABCDEF"
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# define ASCII_HEXADECIMAL_DIGITS_LOWER \
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ASCII_DECIMAL_DIGITS_UPPER "abcdef"
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# define ASCII_CHAR_NAMES { \
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/* 0 */ "NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL", \
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/* 8 */ "BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI", \
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/* 16 */ "DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB", \
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/* 24 */ "CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US", \
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/* 32 */ "SP", "EXCLAMATION_MARK" \
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};
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enum{
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/* 0 */ ASCII_NUL, ASCII_SOH, ASCII_STX, ASCII_ETX,
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/* 4 */ ASCII_EOT, ASCII_ENQ, ASCII_ACK, ASCII_BEL,
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/* 8 */ ASCII_BS, ASCII_HT, ASCII_LF, ASCII_VT,
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/* 12 */ ASCII_FF, ASCII_CR, ASCII_SO, ASCII_SI,
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/* 16 */ ASCII_DLE, ASCII_DC1, ASCII_DC2, ASCII_DC3,
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/* 20 */ ASCII_DC4, ASCII_NAK, ASCII_SYN, ASCII_ETB,
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/* 24 */ ASCII_CAN, ASCII_EM, ASCII_SUB, ASCII_ESC,
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/* 28 */ ASCII_FS, ASCII_GS, ASCII_RS, ASCII_US,
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/* 32 */ ASCII_SP, ASCII_EXCLAMATION_MARK, ASCII_QUOTATION_MARK, ASCII_NUMBER_SIGN,
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/* 36 */ ASCII_CURRENCY_SIGN, ASCII_PERCENT_SIGN, ASCII_AMPERSAND, ASCII_APOSTROPHE,
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/* 40 */ ASCII_LEFT_PARENTHESIS, ASCII_RIGHT_PARENTHESIS, ASCII_ASTERISK, ASCII_PLUS_SIGN,
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/* 44 */ ASCII_COMMA, ASCII_HYPHEN, ASCII_FULL_STOP, ASCII_SOLIDUS,
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/* 48 */ ASCII_0, ASCII_1, ASCII_2, ASCII_3,
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/* 52 */ ASCII_4, ASCII_5, ASCII_6, ASCII_7,
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/* 56 */ ASCII_8, ASCII_9, ASCII_COLON, ASCII_SEMICOLON,
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/* 60 */ ASCII_LESS_THAN_SIGN, ASCII_EQUALS_SIGN, ASCII_GREATER_THAN_SIGN, ASCII_QUESTION_MARK,
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/* 64 */ ASCII_COMMERCIAL_AT, ASCII_A, ASCII_B, ASCII_C,
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/* 68 */ ASCII_D, ASCII_E, ASCII_F, ASCII_G,
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/* 72 */ ASCII_H, ASCII_I, ASCII_J, ASCII_K,
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/* 76 */ ASCII_L, ASCII_M, ASCII_N, ASCII_O,
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/* 80 */ ASCII_P, ASCII_Q, ASCII_R, ASCII_S,
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/* 84 */ ASCII_T, ASCII_U, ASCII_V, ASCII_W,
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/* 88 */ ASCII_X, ASCII_Y, ASCII_Z, ASCII_LEFT_SQUARE_BRACKET,
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/* 92 */ ASCII_REVERSED_SOLIDUS, ASCII_RIGHT_SQUARE_BRACKET, ASCII_CIRCUMFLEX_ACCENT, ASCII_LOW_LINE,
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/* 96 */ ASCII_GRAVE_ACCENT, ASCII_a, ASCII_b, ASCII_c,
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/* 100 */ ASCII_d, ASCII_e, ASCII_f, ASCII_g,
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/* 104 */ ASCII_h, ASCII_i, ASCII_j, ASCII_k,
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/* 108 */ ASCII_l, ASCII_m, ASCII_n, ASCII_o,
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/* 112 */ ASCII_p, ASCII_q, ASCII_r, ASCII_s,
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/* 116 */ ASCII_t, ASCII_u, ASCII_v, ASCII_w,
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/* 120 */ ASCII_x, ASCII_y, ASCII_z, ASCII_LEFT_CURLY_BRACKET,
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/* 124 */ ASCII_VERTICAL_LINE, ASCII_RIGHT_CURLY_BRACKET, ASCII_OVERLINE, ASCII_DELETE
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};
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#endif /* ifndef _ASCII_H */
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13
include/stdbool.h
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include/stdbool.h
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#ifndef _STDBOOL_H
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# define _STDBOOL_H
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# define bool _Bool
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# define false 0
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# define true 1
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# define __bool_true_false_are_defined 1
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/* "dirtbag boolean"
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* - ideally the compiler would keep all the booleans in [x] number of unsigned
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* [type]s so it could squeeze eight booleans out of one byte.
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* alas, the simplest thing tends to be best, and it's nice to not waste 20
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* cycles (figure made up) on applying a bitmask to an int to read a bool */
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# define _Bool unsigned char
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#endif /* ifndef _STDBOOL_H */
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79
include/sysexits.h
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79
include/sysexits.h
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#ifndef _SYSEXITS_H
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# define _SYSEXITS_H
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/* This is a blind implementation of FreeBSD's sysexits(3) as described by the
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* manpage. https://www.freebsd.org/cgi/man.cgi?query=sysexits */
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/* Status descriptions copied from the manpage. */
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/* These should not be relied upon. Also, good diagnostic output trumps
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* this file. */
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enum{
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EX_OK = 0,
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/* The command was used incorrectly, e.g., with the wrong number of
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* arguments, a bad flag, a bad syntax in a parameter, or whatever. */
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EX_USAGE = 64,
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/* The input data was incorrect in some way. This should only be used
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* for user's data and not system files. */
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EX_DATAERR = 65,
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/* An input file (not a system file) did not exist or was not readable.
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* This could also include errors like "No message" to a mailer (if it
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* cared to catch it). */
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EX_NOINPUT = 66,
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/* The user specified did not exist. This might be used for mail
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* addresses or remote logins. */
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EX_NOUSER = 67,
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/* The host specified did not exist. This is used in mail addresses or
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* network requests. */
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EX_NOHOST = 68,
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/* A service is unavailable. This can occur if a support program or
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* file does not exist. This can also be used as a catchall message
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* when something you wanted to do does not work, but you do not know
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* why. */
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EX_UNAVAILABLE = 69,
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/* An internal software error has been detected. This should be limited
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* to non-operating system related errors as possible. */
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EX_SOFTWARE = 70,
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/* An operating system error has been detected. This is intended to be
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* used for such things as "cannot fork", "cannot create pipe", or the
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* like. It includes things like getuid returning a user that does not
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* exist in the passwd file. */
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EX_OSERR = 71,
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/* Some system file (e.g., /etc/passwd, /var/run/utx.active, etc.) does
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* not exist, cannot be opened, or has some sort of error (e.g., syntax
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* error). */
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EX_OSFILE = 72,
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/* A (user specified) output file cannot be created. */
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EX_CANTCREAT = 73,
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/* An error occurred while doing I/O on some file. */
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EX_IOERR = 74,
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/* Temporary failure, indicating something that is not really an error.
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* In sendmail, this means that a mailer (e.g.) could not create a
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* connection, and the request should be reattempted later. */
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EX_TEMPFAIL = 75,
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/* The remote system returned something that was "not possible" during a
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* protocol exchange. */
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EX_PROTOCOL = 76,
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/* You did not have sufficient permission to perform the operation.
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* This is not intended for file system problems, which should use
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* EX_NOINPUT or EX_CANTCREAT, but rather for higher level permissions.
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*/
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EX_NOPERM = 77,
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/* Something was found in an unconfigured or misconfigured state. */
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EX_CONFIG = 78
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};
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#endif /* ifndef _SYSEXITS_H */
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9
include/usefulmacros.h
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9
include/usefulmacros.h
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/* #include <stddef.h>
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* - Needed for NULL in NOARGVZERO
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* #include <sysexits.h>
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* - Needed for EX_OSERR in NOARGVZERO
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* #include <unistd.h>
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* - Needed for write(2) in NOARGVZERO */
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#define ARRAYLEN(a) sizeof((a)) / sizeof(*(a))
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#define NOARGVZERO(a) if(*(a) == NULL) { write(2, "argv[0] is NULL; OS error, exiting...\n", 38); return EX_OSERR; }
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