Initial revision

1 files changed, 324 insertions, 0 deletions

diff --git a/mailcap.c b/mailcap.c
new file mode 100644
index 0000000..6c6e014
--- /dev/null
+++ b/mailcap.c
@@ -0,0 +1,324 @@
+/* $Id: mailcap.c,v 1.1 2001/11/08 05:15:04 a-ito Exp $ */
+#include "fm.h"
+#include "myctype.h"
+#include <stdio.h>
+#include <errno.h>
+#include "parsetag.h"
+#include "local.h"
+
+static struct mailcap DefaultMailcap[] =
+{
+    {"image/*", "xv %s", 0, NULL, NULL, NULL},	/* */
+    {"audio/basic", "showaudio %s", 0, NULL, NULL, NULL},
+    {NULL, NULL, 0, NULL, NULL, NULL}
+};
+
+void
+initMailcap()
+{
+    int i;
+    TextListItem *tl;
+
+    if (non_null(mailcap_files))
+	mailcap_list = make_domain_list(mailcap_files);
+    else
+	mailcap_list = NULL;
+    if (mailcap_list == NULL)
+	return;
+    UserMailcap = New_N(struct mailcap *, mailcap_list->nitem);
+    for (i = 0, tl = mailcap_list->first; tl; i++, tl = tl->next)
+	UserMailcap[i] = loadMailcap(tl->ptr);
+}
+
+int
+mailcapMatch(struct mailcap *mcap, char *type)
+{
+    char *cap = mcap->type, *p;
+    int level;
+    for (p = cap; *p != '/'; p++) {
+	if (tolower(*p) != tolower(*type))
+	    return 0;
+	type++;
+    }
+    if (*type != '/')
+	return 0;
+    p++;
+    type++;
+    if (mcap->flags & MAILCAP_HTMLOUTPUT)
+	level = 1;
+    else
+	level = 0;
+    if (*p == '*')
+	return 10 + level;
+    while (*p) {
+	if (tolower(*p) != tolower(*type))
+	    return 0;
+	p++;
+	type++;
+    }
+    if (*type != '\0')
+	return 0;
+    return 20 + level;
+}
+
+struct mailcap *
+searchMailcap(struct mailcap *table, char *type)
+{
+    int level = 0;
+    struct mailcap *mcap = NULL;
+    int i;
+
+    if (table == NULL)
+	return NULL;
+    for (; table->type; table++) {
+	i = mailcapMatch(table, type);
+	if (i > level) {
+	    if (table->test) {
+		Str command = unquote_mailcap(table->test, type, NULL, NULL);
+		if (system(command->ptr) != 0)
+		    continue;
+	    }
+	    level = i;
+	    mcap = table;
+	}
+    }
+    return mcap;
+}
+
+static int
+matchattr(char *p, char *attr, int len, Str * value)
+{
+    int quoted;
+    char *q = NULL;
+
+    if (strncasecmp(p, attr, len) == 0) {
+	p += len;
+	SKIP_BLANKS(p);
+	if (value) {
+	    *value = Strnew();
+	    if (*p == '=') {
+		p++;
+		SKIP_BLANKS(p);
+		quoted = 0;
+		while (*p && (quoted || *p != ';')) {
+		    if (quoted || !IS_SPACE(*p))
+			q = p;
+		    if (quoted)
+			quoted = 0;
+		    else if (*p == '\\')
+			quoted = 1;
+		    Strcat_char(*value, *p);
+		    p++;
+		}
+		if (q)
+		    Strshrink(*value, p - q - 1);
+	    }
+	    return 1;
+	}
+	else {
+	    if (*p == '\0' || *p == ';') {
+		return 1;
+	    }
+	}
+    }
+    return 0;
+}
+
+int
+extractMailcapEntry(char *mcap_entry, struct mailcap *mcap)
+{
+    int j, k;
+    char *p;
+    int quoted;
+    Str tmp;
+
+    bzero(mcap, sizeof(struct mailcap));
+    p = mcap_entry;
+    SKIP_BLANKS(p);
+    k = -1;
+    for (j = 0; p[j] && p[j] != ';'; j++) {
+	if (!IS_SPACE(p[j]))
+	    k = j;
+    }
+    mcap->type = allocStr(p, (k >= 0)? k + 1 : j);
+    if (!p[j])
+	return 0;
+    p += j + 1;
+
+    SKIP_BLANKS(p);
+    k = -1;
+    quoted = 0;
+    for (j = 0; p[j] && (quoted || p[j] != ';'); j++) {
+	if (quoted || !IS_SPACE(p[j]))
+	    k = j;
+	if (quoted)
+	    quoted = 0;
+	else if (p[j] == '\\')
+	    quoted = 1;
+    }
+    mcap->viewer = allocStr(p, (k >= 0)? k + 1 : j);
+    p += j;
+
+    while (*p == ';') {
+	p++;
+	SKIP_BLANKS(p);
+	if (matchattr(p, "needsterminal", 13, NULL)) {
+	    mcap->flags |= MAILCAP_NEEDSTERMINAL;
+	}
+	else if (matchattr(p, "copiousoutput", 13, NULL)) {
+	    mcap->flags |= MAILCAP_COPIOUSOUTPUT;
+	}
+	else if (matchattr(p, "htmloutput", 10, NULL)) {
+	    mcap->flags |= MAILCAP_HTMLOUTPUT;
+	}
+	else if (matchattr(p, "test", 4, &tmp)) {
+	    mcap->test = allocStr(tmp->ptr, tmp->length);
+	}
+	else if (matchattr(p, "nametemplate", 12, &tmp)) {
+	    mcap->nametemplate = allocStr(tmp->ptr, tmp->length);
+	}
+	else if (matchattr(p, "edit", 4, &tmp)) {
+	    mcap->edit = allocStr(tmp->ptr, tmp->length);
+	}
+	quoted = 0;
+	while (*p && (quoted || *p != ';')) {
+	    if (quoted)
+		quoted = 0;
+	    else if (*p == '\\')
+		quoted = 1;
+	    p++;
+	}
+    }
+    return 1;
+}
+
+struct mailcap *
+loadMailcap(char *filename)
+{
+    FILE *f;
+    int i, n;
+    Str tmp;
+    struct mailcap *mcap;
+
+    f = fopen(expandName(filename), "r");
+    if (f == NULL)
+	return NULL;
+    i = 0;
+    while (tmp = Strfgets(f), tmp->length > 0) {
+	if (tmp->ptr[0] != '#')
+	    i++;
+    }
+    fseek(f, 0, 0);
+    n = i;
+    mcap = New_N(struct mailcap, n + 1);
+    i = 0;
+    while (tmp = Strfgets(f), tmp->length > 0) {
+	if (tmp->ptr[0] == '#')
+	    continue;
+      redo:
+	while (IS_SPACE(Strlastchar(tmp)))
+	    Strshrink(tmp, 1);
+	if (Strlastchar(tmp) == '\\') {
+	    /* continuation */
+	    Strshrink(tmp, 1);
+	    Strcat(tmp, Strfgets(f));
+	    goto redo;
+	}
+	if (extractMailcapEntry(tmp->ptr, &mcap[i]))
+	    i++;
+    }
+    bzero(&mcap[i], sizeof(struct mailcap));
+    fclose(f);
+    return mcap;
+}
+
+struct mailcap *
+searchExtViewer(char *type)
+{
+    struct mailcap *p;
+    int i;
+
+    if (mailcap_list == NULL)
+	goto no_user_mailcap;
+    
+    for (i = 0; i < mailcap_list->nitem; i++) {
+	if ((p = searchMailcap(UserMailcap[i], type)) != NULL)
+	    return p;
+    }
+
+ no_user_mailcap:
+    return searchMailcap(DefaultMailcap, type);
+}
+
+#define MC_NORMAL 0
+#define MC_PREC   1
+#define MC_PREC2  2
+#define MC_QUOTED 3
+
+Str
+unquote_mailcap(char *qstr, char *type, char *name, int *stat)
+{
+    Str str = Strnew();
+    char *p;
+    int status = MC_NORMAL;
+
+    if (stat)
+	*stat = 0;
+    
+    if (qstr == NULL)
+	return NULL;
+
+    for (p = qstr; *p; p++) {
+	if (status == MC_QUOTED) {
+	    Strcat_char(str, *p);
+	    status = MC_NORMAL;
+	    continue;
+	}
+	else if (*p == '\\') {
+	    status = MC_QUOTED;
+	    continue;
+	}
+	switch (status) {
+	case MC_NORMAL:
+	    if (*p == '%') {
+		status = MC_PREC;
+	    }
+	    else
+		Strcat_char(str, *p);
+	    break;
+	case MC_PREC:
+	    if (IS_ALPHA(*p)) {
+		switch (*p) {
+		case 's':
+		    if (name) {
+			Strcat_charp(str, name);
+			if (stat)
+			    *stat |= MCSTAT_REPNAME;
+		    }
+		    break;
+		case 't':
+		    if (type) {
+			Strcat_charp(str, type);
+			if (stat)
+			    *stat |= MCSTAT_REPTYPE;
+		    }
+		    break;
+		}
+		status = MC_NORMAL;
+	    }
+	    else if (*p == '{') {
+		status = MC_PREC2;
+	    }
+	    else if (*p == '%') {
+		Strcat_char(str, *p);
+	    }
+	    break;
+	case MC_PREC2:
+	    if (*p == '}') {
+		status = MC_NORMAL;
+	    }
+	    break;
+	}
+    }
+    return str;
+}