From: David Lawrence Ramsey Date: Mon, 31 May 2004 14:58:59 +0000 (+0000) Subject: add DB's tweaks to do_wrap(), plus a few minor bits of mine (convert X-Git-Tag: v1.3.3~26 X-Git-Url: https://git.wh0rd.org/?a=commitdiff_plain;h=9a527f5a17bbda808eb893c8bd16f2663b71f741;p=nano.git add DB's tweaks to do_wrap(), plus a few minor bits of mine (convert some ints to size_t's and convert the int wrapping to use TRUE and FALSE since it's used as a boolean) git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1793 35c25a1d-7b9e-4130-9fde-d3aeb78583b8 --- diff --git a/ChangeLog b/ChangeLog index d3ee4b18..a961d84e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -156,6 +156,8 @@ CVS code - - Switch the last test (current != NULL or not) around to match the order of the same test in do_next_word() (current == NULL). The results are the same either way. (DLR) + do_wrap() + - Tweak for efficiency. (David Benbennick) do_spell() - Tweak for efficiency. (David Benbennick) - Change the statusbar entries used in cases of failure so that diff --git a/src/nano.c b/src/nano.c index 46eaa91e..b6d75962 100644 --- a/src/nano.c +++ b/src/nano.c @@ -1258,28 +1258,31 @@ void wrap_reset(void) #endif #ifndef DISABLE_WRAPPING -/* We wrap the given line. Precondition: we assume the cursor has been - * moved forward since the last typed character. Return value: - * whether we wrapped. */ +/* We wrap the given line. Precondition: we assume the cursor has been + * moved forward since the last typed character. Return value: whether + * we wrapped. */ int do_wrap(filestruct *inptr) { - size_t len = strlen(inptr->data); /* length of the line we wrap */ - int i = 0; /* generic loop variable */ - int wrap_loc = -1; /* index of inptr->data where we wrap */ + size_t len = strlen(inptr->data); + /* Length of the line we wrap. */ + size_t i = 0; + /* Generic loop variable. */ + int wrap_loc = -1; + /* Index of inptr->data where we wrap. */ int word_back = -1; #ifndef NANO_SMALL const char *indentation = NULL; - /* indentation to prepend to the new line */ - int indent_len = 0; /* strlen(indentation) */ + /* Indentation to prepend to the new line. */ + size_t indent_len = 0; /* strlen(indentation) */ #endif - const char *after_break; /* text after the wrap point */ - int after_break_len; /* strlen(after_break) */ - int wrapping = 0; /* do we prepend to the next line? */ + const char *after_break; /* Text after the wrap point. */ + size_t after_break_len; /* strlen(after_break) */ + int wrapping = FALSE; /* Do we prepend to the next line? */ const char *wrap_line = NULL; - /* the next line, minus indentation */ - int wrap_line_len = 0; /* strlen(wrap_line) */ - char *newline = NULL; /* the line we create */ - int new_line_len = 0; /* eventual length of newline */ + /* The next line, minus indentation */ + size_t wrap_line_len = 0; /* strlen(wrap_line) */ + char *newline = NULL; /* The line we create. */ + size_t new_line_len = 0; /* Eventual length of newline. */ /* There are three steps. First, we decide where to wrap. Then, we * create the new wrap line. Finally, we clean up. */ @@ -1310,23 +1313,23 @@ int do_wrap(filestruct *inptr) #endif wrap_line = inptr->data + i; for (; i < len; i++, wrap_line++) { - /* record where the last word ended */ + /* Record where the last word ended. */ if (!isblank(*wrap_line)) word_back = i; - /* if we have found a "legal wrap point" and the current word - * extends too far, then we stop */ + /* If we have found a "legal wrap point" and the current word + * extends too far, then we stop. */ if (wrap_loc != -1 && strnlenpt(inptr->data, word_back + 1) > fill) break; - /* we record the latest "legal wrap point" */ + /* We record the latest "legal wrap point". */ if (word_back != i && !isblank(wrap_line[1])) wrap_loc = i; } - if (wrap_loc < 0 || i == len) - return 0; + if (i == len) + return FALSE; -/* Step 2, making the new wrap line. It will consist of indentation + - * after_break + " " + wrap_line (although indentation and wrap_line are - * conditional on flags and #defines). */ + /* Step 2, making the new wrap line. It will consist of indentation + * + after_break + " " + wrap_line (although indentation and + * wrap_line are conditional on flags and #defines). */ /* after_break is the text that will be moved to the next line. */ after_break = inptr->data + wrap_loc + 1; @@ -1344,9 +1347,9 @@ int do_wrap(filestruct *inptr) wrap_line = inptr->next->data; wrap_line_len = strlen(wrap_line); - /* +1 for the space between after_break and wrap_line */ + /* +1 for the space between after_break and wrap_line. */ if ((new_line_len + 1 + wrap_line_len) <= fill) { - wrapping = 1; + wrapping = TRUE; new_line_len += (1 + wrap_line_len); } } @@ -1374,11 +1377,13 @@ int do_wrap(filestruct *inptr) if (ISSET(AUTOINDENT)) { strncpy(newline, indentation, indent_len); newline[indent_len] = '\0'; + new_line_len = indent_len; } #endif strcat(newline, after_break); - /* We end the old line after wrap_loc. Note this does not eat the - * space. */ + new_line_len += after_break_len; + /* We end the old line after wrap_loc. Note that this does not eat + * the space. */ null_at(&inptr->data, wrap_loc + 1); totsize++; if (wrapping) { @@ -1386,7 +1391,7 @@ int do_wrap(filestruct *inptr) * between after_break and wrap_line. If the line already ends * in a tab or a space, we don't add a space and decrement * totsize to account for that. */ - if (!isblank(newline[strlen(newline) - 1])) + if (!isblank(newline[new_line_len - 1])) strcat(newline, " "); else totsize--; @@ -1396,8 +1401,8 @@ int do_wrap(filestruct *inptr) } else { filestruct *temp = (filestruct *)nmalloc(sizeof(filestruct)); - /* In this case, the file size changes by +1 for the new line, and - * +indent_len for the new indentation. */ + /* In this case, the file size changes by +1 for the new line, + * and +indent_len for the new indentation. */ #ifndef NANO_SMALL totsize += indent_len; #endif @@ -1414,8 +1419,8 @@ int do_wrap(filestruct *inptr) filebot = temp; } -/* Step 3, clean up. Here we reposition the cursor and mark, and do some - * other sundry things. */ + /* Step 3, clean up. Here we reposition the cursor and mark, and do + * some other sundry things. */ /* later wraps of this line will be prepended to the next line. */ same_line_wrap = 1; @@ -1448,10 +1453,7 @@ int do_wrap(filestruct *inptr) mark_beginx += after_break_len; #endif /* !NANO_SMALL */ - /* Place the cursor. */ - reset_cursor(); - - return 1; + return TRUE; } #endif /* !DISABLE_WRAPPING */