top(1) - support UTF-8 display
Reviewed by: eadler Approved by: gnn (mentor) Differential Revision: https://reviews.freebsd.org/D16006
This commit is contained in:
parent
24e8c13220
commit
4417ed2dbf
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=335836
@ -1262,14 +1262,38 @@ printable(char str[])
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char ch;
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ptr = str;
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while ((ch = *ptr) != '\0')
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{
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if (!isprint(ch))
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{
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if (utf8flag) {
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while ((ch = *ptr) != '\0') {
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if (0x00 == (0x80 & ch)) {
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if (!isprint(ch)) {
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*ptr = '?';
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}
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++ptr;
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} else if (0xC0 == (0xE0 & ch)) {
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++ptr;
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if ('\0' != *ptr) ++ptr;
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} else if (0xE0 == (0xF0 & ch)) {
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++ptr;
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if ('\0' != *ptr) ++ptr;
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if ('\0' != *ptr) ++ptr;
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} else if (0xF0 == (0xF8 & ch)) {
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++ptr;
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if ('\0' != *ptr) ++ptr;
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if ('\0' != *ptr) ++ptr;
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if ('\0' != *ptr) ++ptr;
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} else {
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*ptr = '?';
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++ptr;
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}
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}
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} else {
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while ((ch = *ptr) != '\0') {
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if (!isprint(ch)) {
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*ptr = '?';
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}
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ptr++;
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}
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}
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return(str);
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}
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@ -988,9 +988,13 @@ format_next_process(struct handle * xhandle, char *(*get_userid)(int), int flags
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if (*src == '\0')
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continue;
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len = (argbuflen - (dst - argbuf) - 1) / 4;
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if (utf8flag) {
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utf8strvisx(dst, src, MIN(strlen(src), len));
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} else {
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strvisx(dst, src,
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MIN(strlen(src), len),
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VIS_NL | VIS_CSTYLE);
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}
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while (*dst != '\0')
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dst++;
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if ((argbuflen - (dst - argbuf) - 1) / 4 > 0)
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@ -69,6 +69,7 @@ static int max_topn; /* maximum displayable processes */
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struct process_select ps;
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const char * myname = "top";
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pid_t mypid;
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bool utf8flag = false;
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/* pointers to display routines */
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static void (*d_loadave)(int mpid, double *avenrun) = i_loadave;
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@ -606,6 +607,14 @@ main(int argc, char *argv[])
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fputc('\n', stderr);
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}
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/* check if you are using UTF-8 */
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char *env_lang;
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if (NULL != (env_lang = getenv("LANG")) &&
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0 != strcmp(env_lang, "") &&
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NULL != strstr(env_lang, "UTF-8")) {
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utf8flag = true;
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}
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restart:
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/*
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@ -8,6 +8,7 @@
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#define TOP_H
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#include <unistd.h>
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#include <stdbool.h>
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/* Number of lines of header information on the standard screen */
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extern int Header_lines;
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@ -37,6 +38,7 @@ extern enum displaymodes displaymode;
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extern int pcpu_stats;
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extern int overstrike;
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extern pid_t mypid;
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extern bool utf8flag;
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extern const char * myname;
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@ -2,6 +2,7 @@
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* This program may be freely redistributed,
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* but this entire comment MUST remain intact.
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*
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* Copyright (c) 2018, Daichi Goto
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* Copyright (c) 2018, Eitan Adler
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* Copyright (c) 1984, 1989, William LeFebvre, Rice University
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* Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University
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@ -328,3 +329,61 @@ find_pid(pid_t pid)
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kvm_close(kd);
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return ret;
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}
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/*
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* utf8strvisx(dst,src,src_len)
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* strvisx(dst,src,src_len,VIS_NL|VIS_CSTYLE) coresponding to UTF-8.
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*/
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static const char *vis_encodes[] = {
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"\\0", "\\^A", "\\^B", "\\^C", "\\^D", "\\^E", "\\^F", "\\a",
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"\\b", "\t", "\\n", "\\v", "\\f", "\\r", "\\^N", "\\^O", "\\^P",
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"\\^Q", "\\^R", "\\^S", "\\^T", "\\^U", "\\^V", "\\^W", "\\^X",
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"\\^Y", "\\^Z", "\\^[", "\\^\\", "\\^]", "\\^^", "\\^_"
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};
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int
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utf8strvisx(char *dst, const char *src, size_t src_len)
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{
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const char *src_p;
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char *dst_p;
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int i, j, olen, len;
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src_p = src;
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dst_p = dst;
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i = olen = 0;
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len = (int)src_len;
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while (i < len) {
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if (0x00 == (0x80 & *src_p)) {
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if (0 <= *src_p && *src_p <= 31) {
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j = strlen(vis_encodes[(int)*src_p]);
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strcpy(dst_p, vis_encodes[(int)*src_p]);
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dst_p += j;
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olen += j;
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} else if (127 == *src_p) {
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strcpy(dst_p, "\\^?");
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olen += 3;
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} else {
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*dst_p++ = *src_p;
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++olen;
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}
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++i;
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++src_p;
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} else if (0xC0 == (0xE0 & *src_p)) {
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*dst_p++ = *src_p++; ++i; ++olen;
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if (i < len) { *dst_p++ = *src_p++; ++i; ++olen; }
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} else if (0xE0 == (0xF0 & *src_p)) {
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*dst_p++ = *src_p++; ++i; ++olen;
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if (i < len) { *dst_p++ = *src_p++; ++i; ++olen; }
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if (i < len) { *dst_p++ = *src_p++; ++i; ++olen; }
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} else if (0xF0 == (0xF8 & *src_p)) {
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*dst_p++ = *src_p++; ++i; ++olen;
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if (i < len) { *dst_p++ = *src_p++; ++i; ++olen; }
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if (i < len) { *dst_p++ = *src_p++; ++i; ++olen; }
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if (i < len) { *dst_p++ = *src_p++; ++i; ++olen; }
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} else {
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*dst_p++ = '?'; ++i; ++olen;
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}
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}
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return olen;
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}
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@ -22,4 +22,5 @@ const char *format_time(long);
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char *format_k(int64_t);
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int string_index(const char *string, const char * const *array);
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int find_pid(pid_t pid);
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int utf8strvisx(char *, const char *, size_t);
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