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From 80843d0818c61823bd9dd4c365442d29a8a6f2af Mon Sep 17 00:00:00 2001
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From: Michael Drake <michael.drake@codethink.co.uk>
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Date: Thu, 7 Jun 2018 12:37:13 +0100
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Subject: [PATCH 6/9] lsusb: Split out field name rendering.
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Splits out the rendering of fields from desc_dump() since it
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is a single unit of functionality and the desc_dump() function
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had grown quite complex.
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Signed-off-by: Michael Drake <michael.drake@codethink.co.uk>
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---
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desc-dump.c | 45 +++++++++++++++++++++++++++++++++------------
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1 file changed, 33 insertions(+), 12 deletions(-)
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diff --git a/desc-dump.c b/desc-dump.c
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index 393ff70..2f92768 100644
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--- a/desc-dump.c
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+++ b/desc-dump.c
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@@ -446,6 +446,35 @@ static unsigned int get_char_count_for_array_index(unsigned int array_entries)
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return 3;
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}
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+/**
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+ * Render a field's name.
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+ *
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+ * \param[in] entry Current entry number (for arrays).
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+ * \param[in] entries Entry count (for arrays).
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+ * \param[in] field_len Character width of field name space for alignment.
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+ * \param[in] current Descriptor definition of field to render.
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+ * \param[in] indent Current indent level.
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+ */
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+static void field_render(
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+ unsigned int entry,
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+ unsigned int entries,
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+ unsigned int field_len,
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+ const struct desc *current,
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+ unsigned int indent)
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+{
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+ if (current->array.array) {
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+ unsigned int needed_chars = field_len -
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+ get_char_count_for_array_index(entries) -
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+ strlen(current->field);
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+ printf("%*s%s(%u)%*s", indent * 2, "",
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+ current->field, entry,
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+ needed_chars, "");
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+ } else {
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+ printf("%*s%-*s", indent * 2, "",
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+ field_len, current->field);
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+ }
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+}
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+
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/* Function documented in desc-dump.h */
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void desc_dump(
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libusb_device_handle *dev,
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@@ -506,19 +535,11 @@ void desc_dump(
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printf("\n");
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return;
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}
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+
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/* Dump the field name */
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- if (current->array.array) {
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- needed_chars = field_len -
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- get_char_count_for_array_index(
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- entries) -
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- strlen(current->field);
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- printf("%*s%s(%u)%*s", indent * 2, "",
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- current->field, entry,
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- needed_chars, "");
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- } else {
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- printf("%*s%-*s", indent * 2, "",
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- field_len, current->field);
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- }
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+ field_render(entry, entries, field_len,
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+ current, indent);
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+
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/* Dump the value */
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value_renderer(dev, current, current_size, buf,
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indent, offset);
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--
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2.14.4
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