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libscrut done

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This commit is contained in:
dtb 2023-12-21 14:55:00 -07:00
parent a75414eb17
commit 3fa5d6cdee
2 changed files with 86 additions and 9 deletions
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47
wip/scrut/libscrut.c
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@ -1,7 +1,44 @@
#include "libfileis.h"
#include "libscrut.h"
#include <unistd.h> /* access(3), F_OK, R_OK, W_OK, X_OK */
int f_executable(char *path){ return access(path, X_OK) == 0; }
int f_exists(char *path){ return access(path, F_OK) == 0; }
int f_readable(char *path){ return access(path, R_OK) == 0; }
int f_writeable(char *path){ return access(path, W_OK) == 0; }
int f_executable(char *path){ return access(path, X_OK) == 0; } /* test -x */
int f_exists(char *path){ return access(path, F_OK) == 0; } /* test -e */
int f_readable(char *path){ return access(path, R_OK) == 0; } /* test -r */
int f_writeable(char *path){ return access(path, W_OK) == 0; } /* test -w */
#include <sys/stat.h> /* lstat(3), struct stat, S_ISBLK, S_ISCHR, S_ISDIR,
* S_ISFIFO, S_ISGID, S_ISREG, S_ISLNK, S_ISSOCK,
* S_ISUID */
static struct stat buf;
int f_blockspecial(char *path){ /* test -b */
return lstat(path, &buf) != -1 && S_ISBLK(buf.st_mode);
}
int f_charspecial(char *path){ /* test -c */
return lstat(path, &buf) != -1 && S_ISCHR(buf.st_mode);
}
int f_directory(char *path){ /* test -d */
return lstat(path, &buf) != -1 && S_ISDIR(buf.st_mode);
}
int f_fifospecial(char *path){ /* test -p */
return lstat(path, &buf) != -1 && S_ISFIFO(buf.st_mode);
}
int f_gid(char *path){ /* test -g */
return lstat(path, &buf) != -1 && (buf.st_mode & S_ISGID);
}
int f_regular(char *path){ /* test -f */
return lstat(path, &buf) != -1 && S_ISREG(buf.st_mode);
}
int f_socket(char *path){ /* test -S */
return lstat(path, &buf) != -1 && S_ISSOCK(buf.st_mode);
}
int f_sticky(char *path){ /* test -k */
return lstat(path, &buf) != -1 && (buf.st_mode & S_ISVTX);
}
int f_symlink(char *path){ /* test -h; test -L */
return lstat(path, &buf) != -1 && S_ISLNK(buf.st_mode);
}
int f_uid(char *path){ /* test -u */
return lstat(path, &buf) != -1 && (buf.st_mode & S_ISUID);
}

48
wip/scrut/libscrut.h
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@ -1,4 +1,44 @@
int f_executable(char *path);
int f_exists(char *path);
int f_readable(char *path);
int f_writeable(char *path);
/* libscrut functions return true if the condition is true and false if the
* condition is false. Returned values are 0 or 1 only. */
/* True if file exists and is a block special file. */
int f_blockspecial(char *path);
/* True if file exists and is a character special file. */
int f_charspecial(char *path);
/* True if file exists and is a directory. */
int f_directory(char *path);
/* True if file exists and is executable. */
int f_executable(char *path);
/* True if file exists (regardless of type). */
int f_exists(char *path);
/* True if file exists and is a named pipe (FIFO). */
int f_fifospecial(char *path);
/* True if file exists and its set group ID flag is set. */
int f_gid(char *path);
/* True if file exists and is readable. */
int f_readable(char *path);
/* True if file exists and is a regular file. */
int f_regular(char *path);
/* True if file exists and is a socket. */
int f_socket(char *path);
/* True if file exists and its sticky bit is set. */
int f_sticky(char *path);
/* True if file exists and is a symbolic link. */
int f_symlink(char *path);
/* True if file exists and its set user ID flag is set. */
int f_uid(char *path);
/* True if file exists and is writeable. */
int f_writeable(char *path);