mirror of https://github.com/leahneukirchen/mblaze
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639 lines
12 KiB
C
639 lines
12 KiB
C
#ifndef _XOPEN_SOURCE
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#define _XOPEN_SOURCE 700
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#endif
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#ifdef __sun
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#define __EXTENSIONS__ /* to get TIOCGWINSZ */
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#endif
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#include "xpledge.h"
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <time.h>
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#include <unistd.h>
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#include <wchar.h>
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#include <termios.h>
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#include "blaze822.h"
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#include "u8decode.h"
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static int cols;
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static wchar_t replacement = L'?';
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static char *cur;
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static char *aliases[32];
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static int alias_idx;
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static int Iflag;
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static int nflag;
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static int vflag;
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static int curyear;
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static time_t now;
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static char default_fflag[] = "%c%u%r %-3n %10d %17f %t %2i%s";
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static char *fflag = default_fflag;
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ssize_t
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u8putstr(FILE *out, char *s, ssize_t l, int pad)
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{
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ssize_t ol = l;
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while (*s && l > 0) {
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if (*s == '\t')
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*s = ' ';
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if ((unsigned)*s < 32 || *s == 127) { // C0
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fprintf(out, "%lc", (wint_t)(*s == 127 ? 0x2421 : 0x2400+*s));
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s++;
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l--;
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} else {
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uint32_t c;
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int r = u8decode(s, &c);
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if (r < 0) {
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r = 1;
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l--;
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fprintf(out, "%lc", (wint_t)replacement);
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} else {
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int w = wcwidth((wchar_t)c);
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if (w < 0)
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w = 2; /* assume worst width */
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l -= w;
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if (l >= 0)
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fwrite(s, 1, r, out);
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}
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s += r;
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}
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}
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if (pad)
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while (l-- > 0)
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putc(' ', out);
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if (l < 0)
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l = 0;
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return ol - l;
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}
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int
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itsme(char *v)
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{
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int i;
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char *disp, *addr;
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while ((v = blaze822_addr(v, &disp, &addr)))
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for (i = 0; addr && i < alias_idx; i++)
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if (strcmp(aliases[i], addr) == 0)
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return 1;
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return 0;
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}
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static int init;
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void
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numline(char *file)
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{
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if (!init) {
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// delay loading of the seq until we need to scan the first
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// file, in case someone in the pipe updated the map before
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char *seq = blaze822_seq_open(0);
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blaze822_seq_load(seq);
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cur = blaze822_seq_cur();
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init = 1;
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}
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while (*file == ' ' || *file == '\t')
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file++;
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long lineno = blaze822_seq_find(file);
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if (lineno)
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printf("%ld\n", lineno);
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else
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printf("%s\n", file);
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}
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static char *
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fmt_date(struct message *msg, int w, int iso)
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{
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static char date[32];
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char *v;
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if (!msg)
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return "";
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v = blaze822_hdr(msg, "date");
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if (!v)
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return "(unknown)";
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time_t t = blaze822_date(v);
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if (t == -1)
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return "(invalid)";
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struct tm *tm;
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tm = localtime(&t);
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if (iso) {
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if (w >= 19)
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strftime(date, sizeof date, "%Y-%m-%d %H:%M:%S", tm);
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else if (w >= 16)
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strftime(date, sizeof date, "%Y-%m-%d %H:%M", tm);
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else
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strftime(date, sizeof date, "%Y-%m-%d", tm);
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} else if (w >= 19) {
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// https://dotti.me/
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tm = gmtime(&t);
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strftime(date, sizeof date, "%Y-%m-%dT%H\xc2\xb7%M", tm);
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char *d = date + strlen(date);
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char *e = v + strlen(v);
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while (e > v && (*e != '+' && *e != '-'))
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e--;
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if (isdigit(e[1]) && isdigit(e[2]) && isdigit(e[3]) && isdigit(e[4])) {
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*d++ = e[0];
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*d++ = e[1];
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*d++ = e[2];
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if (e[3] != '0' || e[4] != '0') {
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*d++ = ':';
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*d++ = e[3];
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*d++ = e[4];
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}
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*d = 0;
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} else {
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*d++ = '+';
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*d++ = '0';
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*d++ = '0';
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*d = 0;
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}
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} else if (w < 10) {
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if (tm->tm_year != curyear)
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strftime(date, sizeof date, "%b%y", tm);
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else if (t > now || now - t > 86400)
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strftime(date, sizeof date, "%d%b", tm);
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else
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strftime(date, sizeof date, "%H:%M", tm);
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} else {
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if (tm->tm_year != curyear)
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strftime(date, sizeof date, "%Y-%m-%d", tm);
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else if (t > now || now - t > 86400)
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strftime(date, sizeof date, "%a %b %e", tm);
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else
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strftime(date, sizeof date, "%a %H:%M", tm);
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}
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return date;
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}
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static char *
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fmt_subject(struct message *msg, char *file, int strip)
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{
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static char subjdec[100];
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char *subj = "(no subject)";
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char *v;
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if (!msg) {
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snprintf(subjdec, sizeof subjdec, "\\_ %s", file);
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return subjdec;
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}
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if ((v = blaze822_hdr(msg, "subject")))
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subj = v;
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blaze822_decode_rfc2047(subjdec, subj, sizeof subjdec - 1, "UTF-8");
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if (strip) {
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size_t i;
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for (i = 0; subjdec[i]; ) {
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if (subjdec[i] == ' ') {
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i++;
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continue;
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} else if (strncasecmp("re:", subjdec+i, 3) == 0 ||
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strncasecmp("aw:", subjdec+i, 3) == 0) {
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i += 3;
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continue;
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} else if (strncasecmp("fwd:", subjdec+i, 4) == 0) {
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i += 4;
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continue;
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}
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break;
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}
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return subjdec + i;
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}
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return subjdec;
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}
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static char *
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fmt_from(struct message *msg)
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{
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static char fromdec[256];
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char *from = "(unknown)";
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char *v, *w;
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if (!msg)
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return "";
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if ((v = blaze822_hdr(msg, "from"))) {
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blaze822_decode_rfc2047(fromdec, v, sizeof fromdec - 1, "UTF-8");
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fromdec[sizeof fromdec - 1] = 0;
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from = fromdec;
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if (itsme(fromdec) && ((w = blaze822_hdr(msg, "to")))) {
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memcpy(fromdec, "TO:", 4);
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blaze822_decode_rfc2047(fromdec + 3, w,
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sizeof fromdec - 1 - 3, "UTF-8");
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from = fromdec;
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} else {
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char *disp, *addr;
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blaze822_addr(fromdec, &disp, &addr);
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if (disp)
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from = disp;
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else if (addr)
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from = addr;
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}
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}
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return from;
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}
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static char *
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fmt_to_flag(struct message *msg)
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{
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char *v;
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if (!msg || !alias_idx)
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return " ";
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if ((v = blaze822_hdr(msg, "to")) && itsme(v))
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return ">";
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else if ((v = blaze822_hdr(msg, "cc")) && itsme(v))
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return "+";
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else if ((v = blaze822_hdr(msg, "resent-to")) && itsme(v))
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return ":";
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else if ((v = blaze822_hdr(msg, "from")) && itsme(v))
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return "<";
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else
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return " ";
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}
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static ssize_t
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print_human(intmax_t i, int w)
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{
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double d = i / 1024.0;
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const char *u = "\0\0M\0G\0T\0P\0E\0Z\0Y\0";
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while (d >= 1024) {
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u += 2;
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d /= 1024.0;
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}
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if (d < 1.0)
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return printf("%*.2f", w, d);
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else if (!*u)
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return printf("%*.0f", w, d);
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else if (d < 10.0)
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return printf("%*.1f%s", w-1, d, u);
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else
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return printf("%*.0f%s", w-1, d, u);
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}
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void
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oneline(char *file)
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{
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if (!init) {
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// delay loading of the seq until we need to scan the first
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// file, in case someone in the pipe updated the map before
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char *seq = blaze822_seq_open(0);
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blaze822_seq_load(seq);
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cur = blaze822_seq_cur();
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init = 1;
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}
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int indent = 0;
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while (*file == ' ' || *file == '\t') {
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indent++;
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file++;
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}
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struct message *msg = blaze822(file);
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char *flags = msg ? strstr(file, ":2,") : 0;
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if (!flags)
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flags = "";
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else
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flags += 3;
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int wleft = cols;
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char *f;
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for (f = fflag; *f; f++) {
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if (*f == '\\') {
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f++;
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switch (*f) {
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case 'n': putchar('\n'); wleft = cols; break;
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case 't': putchar('\t'); wleft -= (8 - wleft % 8); break;
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default:
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putchar('\\'); wleft--;
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putchar(*f); wleft--;
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}
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continue;
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}
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if (*f != '%') {
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putchar(*f);
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wleft--;
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continue;
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}
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f++;
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int w = 0;
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if ((*f >= '0' && *f <= '9') || *f == '-') {
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errno = 0;
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char *e;
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w = strtol(f, &e, 10);
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if (errno != 0)
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w = 0;
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else
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f = e;
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}
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if (!*f)
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break;
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switch (*f) {
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case '%':
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putchar('%');
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wleft--;
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break;
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case 'c':
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if (cur && strcmp(cur, file) == 0)
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putchar('>');
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else
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putchar(' ');
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wleft--;
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break;
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case 'u': // unseen
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if (strchr(flags, 'T'))
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putchar('x');
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else if (strchr(flags, 'F'))
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putchar('*');
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else if (msg && !strchr(flags, 'S'))
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putchar('.');
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else
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putchar(' ');
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wleft--;
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break;
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case 'r': // replied
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if (strchr(flags, 'R'))
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putchar('-');
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else if (strchr(flags, 'P'))
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putchar(':');
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else
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putchar(' ');
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wleft--;
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break;
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case 't': // to-flag
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wleft -= printf("%s", fmt_to_flag(msg));
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break;
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case 'M': // raw Maildir flags
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if (!w) w = -3;
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wleft -= printf("%*s", w, flags);
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break;
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case 'n':
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{
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long lineno = msg ? blaze822_seq_find(file) : 0;
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if (lineno)
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wleft -= printf("%*ld", w, lineno);
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else
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wleft -= printf("%*s", w, "");
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}
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break;
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case 'd':
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case 'D':
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if (!w) w = 10;
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wleft -= printf("%*s", w,
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fmt_date(msg, w, Iflag || *f == 'D'));
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break;
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case 'f':
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if (w < 0)
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w += wleft;
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if (w)
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wleft -= u8putstr(stdout,
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fmt_from(msg), w, 1);
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else
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wleft -= u8putstr(stdout,
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fmt_from(msg), wleft, 0);
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break;
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case 'i':
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{
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int z;
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if (!w)
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w = 1;
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if (indent >= 10) {
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wleft -= printf("..%2d..", indent);
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indent = 10 - 6/w;
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}
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for (z = 0; z < w*indent; z++)
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putchar(' ');
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wleft -= w*indent;
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}
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break;
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case 's':
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case 'S':
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if (w < 0)
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w += wleft;
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if (w)
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wleft -= u8putstr(stdout,
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fmt_subject(msg, file, *f == 'S'), w, 1);
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else
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wleft -= u8putstr(stdout,
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fmt_subject(msg, file, *f == 'S'), wleft, 0);
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break;
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case 'b':
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{
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struct stat st;
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if (msg) {
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if (stat(file, &st) != 0)
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st.st_size = 0;
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wleft -= print_human(st.st_size, w);
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} else {
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wleft -= printf("%.*s", w, "");
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}
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}
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break;
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case 'F':
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{
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char *e = file + strlen(file);
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if (!msg)
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goto empty;
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while (file < e && *e != '/')
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e--;
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if (file == e)
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goto empty;
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e--;
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while (file < e && *e != '/')
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e--;
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while (file < e && *e == '/')
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e--;
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if (file == e)
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goto empty;
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char *b = e;
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e++;
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while (file < b && *b != '/')
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b--;
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if (*b == '/')
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b++;
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if (*b == '.')
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b++;
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if (0) {
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empty:
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b = e = "";
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}
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if (w) {
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if (w < 0)
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w = -w;
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wleft -= printf("%*.*s",
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-w, (int)(e-b < w ? e-b : w), b);
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} else {
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wleft -= printf("%.*s", (int)(e-b), b);
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}
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}
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break;
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case 'R':
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if (w)
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wleft -= printf("%*.*s", w, w, file);
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else
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wleft -= printf("%s", file);
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break;
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case 'I':
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{
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char *m = msg ? blaze822_hdr(msg, "message-id") : 0;
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if (!m)
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m = "(unknown)";
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if (w)
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wleft -= printf("%*.*s", w, w, m);
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else
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wleft -= printf("%s", m);
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}
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break;
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default:
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putchar('%');
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putchar(*f);
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wleft -= 2;
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}
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}
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printf("\n");
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blaze822_free(msg);
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}
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int
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main(int argc, char *argv[])
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{
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pid_t pager_pid = -1;
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int c;
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while ((c = getopt(argc, argv, "If:nv")) != -1)
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switch (c) {
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case 'I': Iflag++; break;
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case 'f': fflag = optarg; break;
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case 'n': nflag = 1; break;
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case 'v': vflag = 1; break;
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default:
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fprintf(stderr, "Usage: mscan [-Inv] [-f format] [msgs...]\n");
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exit(1);
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}
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xpledge("stdio rpath tty proc exec", NULL);
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if (nflag) {
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if (argc == optind && isatty(0))
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blaze822_loop1(":", numline);
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else
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blaze822_loop(argc-optind, argv+optind, numline);
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return 0;
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}
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now = time(0);
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struct tm *tm = localtime(&now);
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curyear = tm->tm_year;
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setlocale(LC_ALL, ""); // for wcwidth later
|
|
if (wcwidth(0xfffd) > 0)
|
|
replacement = 0xfffd;
|
|
|
|
struct winsize w;
|
|
int ttyfd = open("/dev/tty", O_RDONLY | O_NOCTTY);
|
|
if (ttyfd >= 0) {
|
|
if (ioctl(ttyfd, TIOCGWINSZ, &w) == 0)
|
|
cols = w.ws_col;
|
|
close(ttyfd);
|
|
}
|
|
|
|
if (isatty(1)) {
|
|
char *pg;
|
|
pg = getenv("MBLAZE_PAGER");
|
|
if (!pg)
|
|
pg = getenv("PAGER");
|
|
if (pg && *pg && strcmp(pg, "cat") != 0) {
|
|
pager_pid = pipeto(pg);
|
|
if (pager_pid < 0)
|
|
fprintf(stderr,
|
|
"mscan: spawning pager '%s': %s\n",
|
|
pg, strerror(errno));
|
|
}
|
|
}
|
|
|
|
xpledge("stdio rpath", "");
|
|
|
|
if (getenv("COLUMNS"))
|
|
cols = atoi(getenv("COLUMNS"));
|
|
if (cols <= 40)
|
|
cols = 80;
|
|
|
|
char *f = blaze822_home_file("profile");
|
|
struct message *config = blaze822(f);
|
|
|
|
if (config) {
|
|
char *v, *d, *a;
|
|
if ((v = blaze822_hdr(config, "local-mailbox")))
|
|
while (alias_idx < (int)(sizeof aliases / sizeof aliases[0]) &&
|
|
(v = blaze822_addr(v, &d, &a)))
|
|
if (a)
|
|
aliases[alias_idx++] = strdup(a);
|
|
if ((v = blaze822_hdr(config, "alternate-mailboxes")))
|
|
while (alias_idx < (int)(sizeof aliases / sizeof aliases[0]) &&
|
|
(v = blaze822_addr(v, &d, &a)))
|
|
if (a)
|
|
aliases[alias_idx++] = strdup(a);
|
|
if ((v = blaze822_hdr(config, "scan-format")))
|
|
if (fflag == default_fflag) // NB. ==
|
|
fflag = v;
|
|
}
|
|
|
|
long i;
|
|
if (argc == optind && isatty(0))
|
|
i = blaze822_loop1(":", oneline);
|
|
else
|
|
i = blaze822_loop(argc-optind, argv+optind, oneline);
|
|
|
|
if (pager_pid > 0)
|
|
pipeclose(pager_pid);
|
|
|
|
if (vflag)
|
|
fprintf(stderr, "%ld mails scanned\n", i);
|
|
|
|
return 0;
|
|
}
|