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-rw-r--r-- | free.c | 25 | ||||
-rw-r--r-- | gemlog.c | 288 | ||||
-rw-r--r-- | gemlog.h | 21 | ||||
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diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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If not, see <https://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + <program> Copyright (C) <year> <name of author> + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +<https://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<https://www.gnu.org/licenses/why-not-lgpl.html>. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..9694799 --- /dev/null +++ b/Makefile @@ -0,0 +1,25 @@ +CC = cc +CFLAGS = -g -O0 -Wall -Wextra +LIBS = -lgemtext +OUT = gemlog + +PREFIX = /usr + +OBJS = gemlog.o free.o main.o strlcpy.o strlcat.o +MANPAGES = + +all: $(OUT) + +$(OUT): $(OBJS) + $(CC) $(CFLAGS) -o $(OUT) $(OBJS) $(LIBS) + +install: all + mkdir -p $(PREFIX)/bin + cp -f $(OUT) $(PREFIX)/bin + mkdir -p $(PREFIX)/share/man/man1 + cp $(MANPAGES) $(PREFIX)/share/man/man1 + +clean: + rm -f $(OUT) $(OBJS) + +.PHONY: all clean diff --git a/free.c b/free.c new file mode 100644 index 0000000..0e754e9 --- /dev/null +++ b/free.c @@ -0,0 +1,25 @@ +#include <stdlib.h> +#include <time.h> + +#include <gemtext.h> + +#include "gemlog.h" + +void +gemlog_entry_free(struct gemlog_entry *e) +{ + if (!e) + return; + free(e->title); + gemtext_list_free(e->content); + free(e); +} + +void +gemlog_entry_list_free(struct gemlog_entry **e) +{ + int i; + for (i = 0; e[i] != NULL; i++) + gemlog_entry_free(e[i]); + free(e); +} diff --git a/gemlog.c b/gemlog.c new file mode 100644 index 0000000..650a28b --- /dev/null +++ b/gemlog.c @@ -0,0 +1,288 @@ +#include <sys/types.h> +#include <sys/stat.h> + +#include <dirent.h> +#include <fcntl.h> +#include <time.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <gemtext.h> + +#include "gemlog.h" + +static struct gemlog_entry **gemlog_readdir_root(struct gemlog_entry **, struct tm, const char *); +static struct gemlog_entry **gemlog_readdir_year(struct gemlog_entry **, struct tm, const char *); +static struct gemlog_entry **gemlog_readdir_month(struct gemlog_entry **, struct tm, const char *); +static struct gemlog_entry **gemlog_readdir_day(struct gemlog_entry **, struct tm, const char *); +static struct gemlog_entry **gemlog_readdir_num(struct gemlog_entry **, struct tm, const char *); + +static struct gemlog_entry ** +gemlog_entry_list_append(struct gemlog_entry **list, struct gemlog_entry *item) +{ + int nitems; + struct gemlog_entry **ret; + + if (list == NULL) { + nitems = 2; + } else { + for (nitems = 0; list[nitems] != NULL; nitems++); /* watch out */ + nitems += 2; /* one for new item, one for terminating NULL */ + } + + ret = realloc(list, nitems*sizeof(*list)); + if (ret == NULL) + return NULL; + + ret[nitems-1] = NULL; + ret[nitems-2] = item; + + return ret; +} + +static struct gemlog_entry ** +gemlog_readdir_root(struct gemlog_entry **feed, struct tm timestamp, const char *path) +{ + DIR *directory; + struct gemlog_entry **ret; + struct dirent *dirlist; + char pathbuf[PATH_MAX+1]; + + directory = opendir(path); + if (directory == NULL) + return NULL; + + dirlist = readdir(directory); + while (dirlist != NULL) { + if (strcmp(dirlist->d_name, ".") == 0 || strcmp(dirlist->d_name, "..") == 0) { + dirlist = readdir(directory); + continue; + } + /* because tm_year adds 1900 */ + timestamp.tm_year = ((int)strtol(dirlist->d_name, NULL, 10)) - 1900; + strlcpy(pathbuf, path, sizeof(pathbuf)); + strlcat(pathbuf, "/", sizeof(pathbuf)); + strlcat(pathbuf, dirlist->d_name, sizeof(pathbuf)); + ret = gemlog_readdir_year(feed, timestamp, pathbuf); + if (ret == NULL) { + gemlog_entry_list_free(feed); + closedir(directory); + return NULL; + } + feed = ret; + dirlist = readdir(directory); + } + + closedir(directory); + return ret; +} + +static struct gemlog_entry ** +gemlog_readdir_year(struct gemlog_entry **feed, struct tm timestamp, const char *path) +{ + DIR *directory; + struct gemlog_entry **ret; + struct dirent *dirlist; + char pathbuf[PATH_MAX+1]; + + directory = opendir(path); + if (directory == NULL) + return NULL; + + dirlist = readdir(directory); + while (dirlist != NULL) { + if (strcmp(dirlist->d_name, ".") == 0 || strcmp(dirlist->d_name, "..") == 0) { + dirlist = readdir(directory); + continue; + } + timestamp.tm_mon = (int)strtol(dirlist->d_name, NULL, 10); + timestamp.tm_mon--; /* Month is range (0-11) */ + strlcpy(pathbuf, path, sizeof(pathbuf)); + strlcat(pathbuf, "/", sizeof(pathbuf)); + strlcat(pathbuf, dirlist->d_name, sizeof(pathbuf)); + ret = gemlog_readdir_month(feed, timestamp, pathbuf); + if (ret == NULL) { + closedir(directory); + return NULL; + } + feed = ret; + dirlist = readdir(directory); + } + + closedir(directory); + return ret; +} + +static struct gemlog_entry ** +gemlog_readdir_month(struct gemlog_entry **feed, struct tm timestamp, const char *path) +{ + DIR *directory; + struct gemlog_entry **ret; + struct dirent *dirlist; + char pathbuf[PATH_MAX+1]; + + directory = opendir(path); + if (directory == NULL) + return NULL; + + dirlist = readdir(directory); + while (dirlist != NULL) { + if (strcmp(dirlist->d_name, ".") == 0 || strcmp(dirlist->d_name, "..") == 0) { + dirlist = readdir(directory); + continue; + } + timestamp.tm_mday = (int)strtol(dirlist->d_name, NULL, 10); + strlcpy(pathbuf, path, sizeof(pathbuf)); + strlcat(pathbuf, "/", sizeof(pathbuf)); + strlcat(pathbuf, dirlist->d_name, sizeof(pathbuf)); + ret = gemlog_readdir_day(feed, timestamp, pathbuf); + if (ret == NULL) { + closedir(directory); + return NULL; + } + feed = ret; + dirlist = readdir(directory); + } + + closedir(directory); + return ret; +} + +static struct gemlog_entry ** +gemlog_readdir_day(struct gemlog_entry **feed, struct tm timestamp, const char *path) +{ + DIR *directory; + struct gemlog_entry **ret; + struct dirent *dirlist; + char pathbuf[PATH_MAX+1]; + + directory = opendir(path); + if (directory == NULL) + return NULL; + + dirlist = readdir(directory); + while (dirlist != NULL) { + if (strcmp(dirlist->d_name, ".") == 0 || strcmp(dirlist->d_name, "..") == 0) { + dirlist = readdir(directory); + continue; + } + /* hour is set, but not used, it is just a counter for how + * many entries are made within one day */ + timestamp.tm_hour = (int)strtol(dirlist->d_name, NULL, 10); + strlcpy(pathbuf, path, sizeof(pathbuf)); + strlcat(pathbuf, "/", sizeof(pathbuf)); + strlcat(pathbuf, dirlist->d_name, sizeof(pathbuf)); + ret = gemlog_readdir_num(feed, timestamp, pathbuf); + if (ret == NULL) { + closedir(directory); + return NULL; + } + feed = ret; + dirlist = readdir(directory); + } + + closedir(directory); + return ret; +} + +static struct gemlog_entry ** +gemlog_readdir_num(struct gemlog_entry **feed, struct tm timestamp, const char *path) +{ + int fd; + DIR *directory; + struct gemlog_entry **ret; + struct gemlog_entry *entry; + struct dirent *dirlist; + struct stat fst; + char pathbuf[PATH_MAX+1]; + + directory = opendir(path); + if (directory == NULL) + return NULL; + + entry = malloc(sizeof(*entry)); + if (entry == NULL) { + closedir(directory); + return NULL; + } + memset(entry, 0, sizeof(*entry)); + + entry->date = timestamp; + + dirlist = readdir(directory); + while (dirlist != NULL) { + if (strcmp(dirlist->d_name, ".") == 0 || strcmp(dirlist->d_name, "..") == 0) { + dirlist = readdir(directory); + continue; + } + if (strcmp(dirlist->d_name, GEMLOG_TITLE_FILENAME) == 0) { + strlcpy(pathbuf, path, sizeof(pathbuf)); + strlcat(pathbuf, "/", sizeof(pathbuf)); + strlcat(pathbuf, dirlist->d_name, sizeof(pathbuf)); + fd = open(pathbuf, O_RDONLY); + if (fd == -1) { + gemlog_entry_free(entry); + closedir(directory); + return NULL; + } + if (fstat(fd, &fst) == -1) { + gemlog_entry_free(entry); + close(fd); + closedir(directory); + return NULL; + } + entry->title = malloc(fst.st_size+1); + if (entry->title == NULL) { + gemlog_entry_free(entry); + close(fd); + closedir(directory); + return NULL; + } + memset(entry->title, 0, fst.st_size+1); + if (read(fd, entry->title, fst.st_size) == -1) { + gemlog_entry_free(entry); + close(fd); + closedir(directory); + return NULL; + } + close(fd); + } + if (strcmp(dirlist->d_name, GEMLOG_CONTENT_FILENAME) == 0) { + strlcpy(pathbuf, path, sizeof(pathbuf)); + strlcat(pathbuf, "/", sizeof(pathbuf)); + strlcat(pathbuf, dirlist->d_name, sizeof(pathbuf)); + entry->content = gemtext_list_decode_file(pathbuf); + if (entry->content == NULL) { + gemlog_entry_free(entry); + closedir(directory); + return NULL; + } + } + dirlist = readdir(directory); + } + + ret = gemlog_entry_list_append(feed, entry); + if (ret == NULL) { + gemlog_entry_free(entry); + closedir(directory); + return NULL; + } + + closedir(directory); + return ret; +} + +struct gemlog_entry ** +gemlog_readdir(const char *path) +{ + struct tm timestamp; + struct gemlog_entry **ret; + + memset(×tamp, 0, sizeof(timestamp)); + ret = gemlog_readdir_root(NULL, timestamp, path); + if (ret == NULL) + return NULL; + + return ret; +} diff --git a/gemlog.h b/gemlog.h new file mode 100644 index 0000000..7c84039 --- /dev/null +++ b/gemlog.h @@ -0,0 +1,21 @@ +#define GEMLOG_TITLE_FILENAME "title" +#define GEMLOG_CONTENT_FILENAME "content.gmi" + +struct gemlog_entry { + char *title; + struct tm date; + struct gemtext **content; +}; + +/* strlcpy.c/strlcat.c */ +#undef strlcpy +#undef strlcat +size_t strlcpy(char *, const char *, size_t); +size_t strlcat(char *, const char *, size_t); + +/* gemlog.c */ +struct gemlog_entry **gemlog_readdir(const char *); + +/* free.c */ +void gemlog_entry_free(struct gemlog_entry *); +void gemlog_entry_list_free(struct gemlog_entry **); diff --git a/main.c b/main.c new file mode 100644 index 0000000..1d4577f --- /dev/null +++ b/main.c @@ -0,0 +1,66 @@ +#include <stdio.h> +#include <time.h> +#include <unistd.h> +#include <err.h> + +#include <gemtext.h> + +#include "gemlog.h" + +static void +_print_gemlog(struct gemlog_entry **list) +{ + int i; + char timestamp[50]; + + for (i = 0; list[i] != NULL; i++) { + strftime(timestamp, sizeof(timestamp), "%F: ", &(list[i]->date)); + printf("%s%s\n", timestamp, list[i]->title); + } +} + +int +main(int argc, char *argv[]) +{ + struct gemlog_entry **log; + int aflag; + int hflag; + int ch; + + aflag = 0; + hflag = 0; + + while ((ch = getopt(argc, argv, "ah")) != -1) { + switch (ch) { + case 'a': + aflag = 1; + break; + case 'h': + hflag = 1; + break; + default: + fprintf(stderr, "Usage: %s <-a | -h> <path>\n", argv[0]); + return 1; + } + } + + if (aflag && hflag) + errx(1, "can't have -a and -h used simultaneously"); + if (!aflag && !hflag) { + fprintf(stderr, "Usage: %s <-a | -h> <path>\n", argv[0]); + return 1; + } + if (optind >= argc) { + fprintf(stderr, "Usage: %s <-a | -h> <path>\n", argv[0]); + return 1; + } + + log = gemlog_readdir(argv[optind]); + if (log == NULL) + err(1, "gemlog_readdir"); + + _print_gemlog(log); + + gemlog_entry_list_free(log); + return 0; +} diff --git a/strlcat.c b/strlcat.c new file mode 100644 index 0000000..c94e90d --- /dev/null +++ b/strlcat.c @@ -0,0 +1,55 @@ +/* $OpenBSD: strlcat.c,v 1.19 2019/01/25 00:19:25 millert Exp $ */ + +/* + * Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> +#include <string.h> + +/* + * Appends src to string dst of size dsize (unlike strncat, dsize is the + * full size of dst, not space left). At most dsize-1 characters + * will be copied. Always NUL terminates (unless dsize <= strlen(dst)). + * Returns strlen(src) + MIN(dsize, strlen(initial dst)). + * If retval >= dsize, truncation occurred. + */ +size_t +strlcat(char *dst, const char *src, size_t dsize) +{ + const char *odst = dst; + const char *osrc = src; + size_t n = dsize; + size_t dlen; + + /* Find the end of dst and adjust bytes left but don't go past end. */ + while (n-- != 0 && *dst != '\0') + dst++; + dlen = dst - odst; + n = dsize - dlen; + + if (n-- == 0) + return(dlen + strlen(src)); + while (*src != '\0') { + if (n != 0) { + *dst++ = *src; + n--; + } + src++; + } + *dst = '\0'; + + return(dlen + (src - osrc)); /* count does not include NUL */ +} diff --git a/strlcpy.c b/strlcpy.c new file mode 100644 index 0000000..2fa498c --- /dev/null +++ b/strlcpy.c @@ -0,0 +1,50 @@ +/* $OpenBSD: strlcpy.c,v 1.16 2019/01/25 00:19:25 millert Exp $ */ + +/* + * Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> +#include <string.h> + +/* + * Copy string src to buffer dst of size dsize. At most dsize-1 + * chars will be copied. Always NUL terminates (unless dsize == 0). + * Returns strlen(src); if retval >= dsize, truncation occurred. + */ +size_t +strlcpy(char *dst, const char *src, size_t dsize) +{ + const char *osrc = src; + size_t nleft = dsize; + + /* Copy as many bytes as will fit. */ + if (nleft != 0) { + while (--nleft != 0) { + if ((*dst++ = *src++) == '\0') + break; + } + } + + /* Not enough room in dst, add NUL and traverse rest of src. */ + if (nleft == 0) { + if (dsize != 0) + *dst = '\0'; /* NUL-terminate dst */ + while (*src++) + ; + } + + return(src - osrc - 1); /* count does not include NUL */ +} |