Ticket #2113: procps-3.2.7-watch-unicode.patch

procps-3.2.7

@@ -67 +67 @@
 # plus the top-level Makefile to make it work stand-alone.
 _TARFILES := Makefile
 
-CURSES := -lncurses
+CURSES := -lncursesw
 
 # This seems about right for the dynamic library stuff.
 # Something like this is probably needed to make the SE Linux

procps-3.2.7

@@ -25 +25 @@
 #include <termios.h>
 #include <locale.h>
 #include "proc/procps.h"
+#include <wchar.h>
+#include <wctype.h>
 
 #ifdef FORCE_8BIT
 #undef isprint
@@ -134 +136 @@
         }
 }
 
+static wint_t
+readwc(FILE *stream, mbstate_t *mbs)
+{
+        for (;;) {
+                int chr;
+                char c;
+                wchar_t wc;
+                size_t len;
+
+                chr = getc(stream);
+                if (chr == EOF)
+                        return WEOF;
+                c = chr;
+                len = mbrtowc(&wc, &c, 1, mbs);
+                if (len == (size_t)-1)
+                        memset(mbs, 0, sizeof(*mbs));
+                else if (len != (size_t)-2)
+                        return wc;
+        }
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -239 +262 @@
                 FILE *p;
                 int x, y;
                 int oldeolseen = 1;
+                mbstate_t mbs;
 
                 if (screen_size_changed) {
                         get_terminal_size();
@@ -266 +290 @@
                         do_exit(2);
                 }
 
+                memset(&mbs, 0, sizeof(mbs));
                 for (y = show_title; y < height; y++) {
                         int eolseen = 0, tabpending = 0;
                         for (x = 0; x < width; x++) {
-                                int c = ' ';
-                                int attr = 0;
+                                wint_t c = L' ';
+                                int attr = 0, c_width;
+                                cchar_t cc;
+                                wchar_t wstr[2];
 
                                 if (!eolseen) {
                                         /* if there is a tab pending, just spit spaces until the
                                            next stop instead of reading characters */
                                         if (!tabpending)
                                                 do
-                                                        c = getc(p);
-                                                while (c != EOF && !isprint(c)
-                                                       && c != '\n'
-                                                       && c != '\t');
-                                        if (c == '\n')
+                                                        c = readwc(p, &mbs);
+                                                while (c != WEOF && !iswprint(c)
+                                                       && c != L'\n'
+                                                       && c != L'\t');
+                                        if (c == L'\n')
                                                 if (!oldeolseen && x == 0) {
                                                         x = -1;
                                                         continue;
                                                 } else
                                                         eolseen = 1;
-                                        else if (c == '\t')
+                                        else if (c == L'\t')
                                                 tabpending = 1;
-                                        if (c == EOF || c == '\n' || c == '\t')
-                                                c = ' ';
+                                        if (c == WEOF || c == L'\n' || c == L'\t')
+                                                c = L' ';
                                         if (tabpending && (((x + 1) % 8) == 0))
                                                 tabpending = 0;
                                 }
+                                wstr[0] = c;
+                                wstr[1] = 0;
+                                setcchar (&cc, wstr, 0, 0, NULL);
                                 move(y, x);
                                 if (option_differences) {
-                                        int oldch = inch();
-                                        char oldc = oldch & A_CHARTEXT;
+                                        cchar_t oldc;
+                                        wchar_t oldwstr[2];
+                                        attr_t attrs;
+                                        short colors;
+
+                                        in_wch(&oldc);
+                                        getcchar(&oldc, oldwstr, &attrs, &colors, NULL);
                                         attr = !first_screen
-                                            && (c != oldc
+                                            && (wstr[0] != oldwstr[0]
                                                 ||
                                                 (option_differences_cumulative
-                                                 && (oldch & A_ATTRIBUTES)));
+                                                 && attrs));
                                 }
                                 if (attr)
                                         standout();
-                                addch(c);
+                                add_wch(&cc);
                                 if (attr)
                                         standend();
+                                c_width = wcwidth(c);
+                                if (c_width > 1)
+                                        x += c_width - 1;
                         }
                         oldeolseen = eolseen;
                 }