1 files changed, 257 insertions, 0 deletions
diff --git a/libsmartcols/src/cell.c b/libsmartcols/src/cell.c
new file mode 100644
index 0000000..0717a2d
--- /dev/null
+++ b/libsmartcols/src/cell.c
@@ -0,0 +1,257 @@
+/*
+ * cell.c - functions for table handling at the cell level
+ *
+ * Copyright (C) 2014 Ondrej Oprala <ooprala@redhat.com>
+ * Copyright (C) 2014 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+
+/**
+ * SECTION: cell
+ * @title: Cell
+ * @short_description: container for your data
+ *
+ * An API to access and modify per-cell data and information. Note that cell is
+ * always part of the line. If you destroy (un-reference) a line than it
+ * destroys all line cells too.
+ */
+
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "smartcolsP.h"
+
+/*
+ * The cell has no ref-counting, free() and new() functions. All is
+ * handled by libscols_line.
+ */
+
+/**
+ * scols_reset_cell:
+ * @ce: pointer to a struct libscols_cell instance
+ *
+ * Frees the cell's internal data and resets its status.
+ *
+ * Returns: 0, a negative value in case of an error.
+ */
+int scols_reset_cell(struct libscols_cell *ce)
+{
+	if (!ce)
+		return -EINVAL;
+
+	/*DBG(CELL, ul_debugobj(ce, "reset"));*/
+	free(ce->data);
+	free(ce->color);
+	memset(ce, 0, sizeof(*ce));
+	return 0;
+}
+
+/**
+ * scols_cell_set_data:
+ * @ce: a pointer to a struct libscols_cell instance
+ * @data: data (used for scols_print_table())
+ *
+ * Stores a copy of the @str in @ce, the old data are deallocated by free().
+ *
+ * Returns: 0, a negative value in case of an error.
+ */
+int scols_cell_set_data(struct libscols_cell *ce, const char *data)
+{
+	return strdup_to_struct_member(ce, data, data);
+}
+
+/**
+ * scols_cell_refer_data:
+ * @ce: a pointer to a struct libscols_cell instance
+ * @data: data (used for scols_print_table())
+ *
+ * Adds a reference to @str to @ce. The pointer is deallocated by
+ * scols_reset_cell() or scols_unref_line(). This function is mostly designed
+ * for situations when the data for the cell are already composed in allocated
+ * memory (e.g. asprintf()) to avoid extra unnecessary strdup().
+ *
+ * Returns: 0, a negative value in case of an error.
+ */
+int scols_cell_refer_data(struct libscols_cell *ce, char *data)
+{
+	if (!ce)
+		return -EINVAL;
+	free(ce->data);
+	ce->data = data;
+	return 0;
+}
+
+/**
+ * scols_cell_get_data:
+ * @ce: a pointer to a struct libscols_cell instance
+ *
+ * Returns: data in @ce or NULL.
+ */
+const char *scols_cell_get_data(const struct libscols_cell *ce)
+{
+	return ce ? ce->data : NULL;
+}
+
+/**
+ * scols_cell_set_userdata:
+ * @ce: a pointer to a struct libscols_cell instance
+ * @data: private user data
+ *
+ * Returns: 0, a negative value in case of an error.
+ */
+int scols_cell_set_userdata(struct libscols_cell *ce, void *data)
+{
+	if (!ce)
+		return -EINVAL;
+	ce->userdata = data;
+	return 0;
+}
+
+/**
+ * scols_cell_get_userdata
+ * @ce: a pointer to a struct libscols_cell instance
+ *
+ * Returns: user data
+ */
+void *scols_cell_get_userdata(struct libscols_cell *ce)
+{
+	return ce->userdata;
+}
+
+/**
+ * scols_cmpstr_cells:
+ * @a: pointer to cell
+ * @b: pointer to cell
+ * @data: unused pointer to private data (defined by API)
+ *
+ * Compares cells data by strcmp(). The function is designed for
+ * scols_column_set_cmpfunc() and scols_sort_table().
+ *
+ * Returns: follows strcmp() return values.
+ */
+int scols_cmpstr_cells(struct libscols_cell *a,
+		       struct libscols_cell *b,
+		       __attribute__((__unused__)) void *data)
+{
+	const char *adata, *bdata;
+
+	if (a == b)
+		return 0;
+
+	adata = scols_cell_get_data(a);
+	bdata = scols_cell_get_data(b);
+
+	if (adata == NULL && bdata == NULL)
+		return 0;
+	if (adata == NULL)
+		return -1;
+	if (bdata == NULL)
+		return 1;
+	return strcmp(adata, bdata);
+}
+
+/**
+ * scols_cell_set_color:
+ * @ce: a pointer to a struct libscols_cell instance
+ * @color: color name or ESC sequence
+ *
+ * Set the color of @ce to @color.
+ *
+ * Returns: 0, a negative value in case of an error.
+ */
+int scols_cell_set_color(struct libscols_cell *ce, const char *color)
+{
+	if (color && isalpha(*color)) {
+		color = color_sequence_from_colorname(color);
+		if (!color)
+			return -EINVAL;
+	}
+	return strdup_to_struct_member(ce, color, color);
+}
+
+/**
+ * scols_cell_get_color:
+ * @ce: a pointer to a struct libscols_cell instance
+ *
+ * Returns: the current color of @ce.
+ */
+const char *scols_cell_get_color(const struct libscols_cell *ce)
+{
+	return ce->color;
+}
+
+/**
+ * scols_cell_set_flags:
+ * @ce: a pointer to a struct libscols_cell instance
+ * @flags: SCOLS_CELL_FL_* flags
+ *
+ * Note that cells in the table are always aligned by column flags. The cell
+ * flags are used for table title only (now).
+ *
+ * Returns: 0, a negative value in case of an error.
+ */
+int scols_cell_set_flags(struct libscols_cell *ce, int flags)
+{
+	if (!ce)
+		return -EINVAL;
+	ce->flags = flags;
+	return 0;
+}
+
+/**
+ * scols_cell_get_flags:
+ * @ce: a pointer to a struct libscols_cell instance
+ *
+ * Returns: the current flags
+ */
+int scols_cell_get_flags(const struct libscols_cell *ce)
+{
+	return ce->flags;
+}
+
+/**
+ * scols_cell_get_alignment:
+ * @ce: a pointer to a struct libscols_cell instance
+ *
+ * Since: 2.30
+ *
+ * Returns: SCOLS_CELL_FL_{RIGHT,CELNTER,LEFT}
+ */
+int scols_cell_get_alignment(const struct libscols_cell *ce)
+{
+	if (ce->flags & SCOLS_CELL_FL_RIGHT)
+		return SCOLS_CELL_FL_RIGHT;
+	else if (ce->flags & SCOLS_CELL_FL_CENTER)
+		return SCOLS_CELL_FL_CENTER;
+
+	return SCOLS_CELL_FL_LEFT;	/* default */
+}
+
+/**
+ * scols_cell_copy_content:
+ * @dest: a pointer to a struct libscols_cell instance
+ * @src: a pointer to an immutable struct libscols_cell instance
+ *
+ * Copy the contents of @src into @dest.
+ *
+ * Returns: 0, a negative value in case of an error.
+ */
+int scols_cell_copy_content(struct libscols_cell *dest,
+			    const struct libscols_cell *src)
+{
+	int rc;
+
+	rc = scols_cell_set_data(dest, scols_cell_get_data(src));
+	if (!rc)
+		rc = scols_cell_set_color(dest, scols_cell_get_color(src));
+	if (!rc)
+		dest->userdata = src->userdata;
+
+	DBG(CELL, ul_debugobj(src, "copy"));
+	return rc;
+}